﻿<?xml version="1.0" encoding="utf-8"?>
<InstanceReport xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Version>2.2.0.7</Version>
  <hasSegments>false</hasSegments>
  <ReportName>Bank Regulatory Capital</ReportName>
  <ReportLongName>0215 - Disclosure - Bank Regulatory Capital</ReportLongName>
  <DisplayLabelColumn>true</DisplayLabelColumn>
  <ShowElementNames>false</ShowElementNames>
  <RoundingOption />
  <HasEmbeddedReports>false</HasEmbeddedReports>
  <Columns>
    <Column>
      <LabelColumn>false</LabelColumn>
      <Id>1</Id>
      <Labels>
        <Label Id="1" Label="9 Months Ended" />
        <Label Id="2" Label="Sep. 30, 2010" />
      </Labels>
      <CurrencyCode>USD</CurrencyCode>
      <FootnoteIndexer />
      <hasSegments>false</hasSegments>
      <hasScenarios>false</hasScenarios>
      <Segments />
      <Scenarios />
      <Units>
        <Unit>
          <UnitID>USD</UnitID>
          <UnitType>Standard</UnitType>
          <StandardMeasure>
            <MeasureSchema>http://www.xbrl.org/2003/iso4217</MeasureSchema>
            <MeasureValue>USD</MeasureValue>
            <MeasureNamespace>iso4217</MeasureNamespace>
          </StandardMeasure>
          <Scale>0</Scale>
        </Unit>
        <Unit>
          <UnitID>EPS</UnitID>
          <UnitType>Divide</UnitType>
          <NumeratorMeasure>
            <MeasureSchema>http://www.xbrl.org/2003/iso4217</MeasureSchema>
            <MeasureValue>USD</MeasureValue>
            <MeasureNamespace>iso4217</MeasureNamespace>
          </NumeratorMeasure>
          <DenominatorMeasure>
            <MeasureSchema>http://www.xbrl.org/2003/instance</MeasureSchema>
            <MeasureValue>shares</MeasureValue>
            <MeasureNamespace>xbrli</MeasureNamespace>
          </DenominatorMeasure>
          <Scale>0</Scale>
        </Unit>
        <Unit>
          <UnitID>Shares</UnitID>
          <UnitType>Standard</UnitType>
          <StandardMeasure>
            <MeasureSchema>http://www.xbrl.org/2003/instance</MeasureSchema>
            <MeasureValue>shares</MeasureValue>
            <MeasureNamespace>xbrli</MeasureNamespace>
          </StandardMeasure>
          <Scale>0</Scale>
        </Unit>
      </Units>
      <CurrencySymbol>$</CurrencySymbol>
    </Column>
  </Columns>
  <Rows>
    <Row>
      <Id>2</Id>
      <Label>Bank Regulatory Capital [Abstract]</Label>
      <Level>0</Level>
      <ElementName>us-gaap_SummaryOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsAbstract</ElementName>
      <ElementPrefix>us-gaap</ElementPrefix>
      <IsBaseElement>true</IsBaseElement>
      <BalanceType>na</BalanceType>
      <PeriodType>duration</PeriodType>
      <ShortDefinition>No definition available.</ShortDefinition>
      <IsReportTitle>false</IsReportTitle>
      <IsSegmentTitle>false</IsSegmentTitle>
      <IsSubReportEnd>false</IsSubReportEnd>
      <IsCalendarTitle>false</IsCalendarTitle>
      <IsTuple>false</IsTuple>
      <IsAbstractGroupTitle>true</IsAbstractGroupTitle>
      <IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow>
      <IsEquityAdjustmentRow>false</IsEquityAdjustmentRow>
      <IsBeginningBalance>false</IsBeginningBalance>
      <IsEndingBalance>false</IsEndingBalance>
      <IsReverseSign>false</IsReverseSign>
      <PreferredLabelRole />
      <IsEPS>false</IsEPS>
      <FootnoteIndexer />
      <Cells>
        <Cell>
          <Id>1</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
      </Cells>
      <OriginalInstanceReportColumns />
      <ElementDataType>xbrli:stringItemType</ElementDataType>
      <SimpleDataType>string</SimpleDataType>
      <ElementDefenition>No definition available.</ElementDefenition>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
    <Row>
      <Id>3</Id>
      <Label>Bank Regulatory Capital</Label>
      <Level>1</Level>
      <ElementName>us-gaap_RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock</ElementName>
      <ElementPrefix>us-gaap</ElementPrefix>
      <IsBaseElement>true</IsBaseElement>
      <BalanceType>na</BalanceType>
      <PeriodType>duration</PeriodType>
      <ShortDefinition>No definition available.</ShortDefinition>
      <IsReportTitle>false</IsReportTitle>
      <IsSegmentTitle>false</IsSegmentTitle>
      <IsSubReportEnd>false</IsSubReportEnd>
      <IsCalendarTitle>false</IsCalendarTitle>
      <IsTuple>false</IsTuple>
      <IsAbstractGroupTitle>false</IsAbstractGroupTitle>
      <IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow>
      <IsEquityAdjustmentRow>false</IsEquityAdjustmentRow>
      <IsBeginningBalance>false</IsBeginningBalance>
      <IsEndingBalance>false</IsEndingBalance>
      <IsReverseSign>false</IsReverseSign>
      <PreferredLabelRole>verboselabel</PreferredLabelRole>
      <IsEPS>false</IsEPS>
      <FootnoteIndexer />
      <Cells>
        <Cell>
          <Id>1</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText>&lt;p style='margin-top:0pt; margin-bottom:0pt'&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:0px;"&gt;Note&amp;#160;&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;15&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;.&amp;#160;&amp;#160;Bank Regulatory Capital&lt;/font&gt;&lt;/p&gt;&lt;p style='margin-top:0pt; margin-bottom:0pt'&gt;&amp;#160;&lt;/p&gt;&lt;p style='margin-top:0pt; margin-bottom:0pt'&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;margin-left:11px;"&gt;CapitalSource Bank is subject to various regulatory capital requirements established by federal and state regulatory agencies. Failure to meet minimum capital requirements can result in regulatory agencies initiating certain mandatory and possibly additional discretionary actions that, if undertaken, could have a direct material effect on our consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, CapitalSource Bank must meet specific capital guidelines that involve quantitative measures of its assets and liabilities as calculated under regulatory accounting practices. CapitalSource Bank's capital amounts and other requirements are also subject to qualitative judgments by its regulators about risk weightings and other factors. See Item&amp;#160;1, &lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Business&amp;#160;&amp;#8212;&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt; &lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Supervision and Regulation&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;, in our Form&amp;#160;10-K for the year ended &lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;December 31, 2009&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;,&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt; for a further description of CapitalSource Bank's regulatory requirements.&lt;/font&gt;&lt;/p&gt;&lt;p style='margin-top:0pt; margin-bottom:0pt'&gt;&amp;#160;&lt;/p&gt;&lt;p style='margin-top:0pt; margin-bottom:0pt'&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;margin-left:11px;"&gt;Under prompt corrective action regulations, a &amp;#8220;well-capitalized&amp;#8221; bank must have a total risk-based capital ratio of 10%, a Tier&amp;#160;1 risk-based capital ratio of 6%, and a Tier&amp;#160;1 leverage ratio of 5%. Under its approval order from the FDIC, CapitalSource Bank must be &amp;#8220;well&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;-&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;capitalized&amp;#8221; and at all times have a total risk-based capital ratio of 15%, a Tier-1 risk-based capital ratio of 6% and a Tier&amp;#160;1 leverage ratio of 5%. CapitalSource Bank's capital ratios and the minimum requirement&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;s&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt; as of &lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;September 30, 2010&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt; &lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;and &lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;December 31, 2009&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt; were as follows:&lt;/font&gt;&lt;/p&gt;&lt;p style='margin-top: 0pt; margin-bottom: 0pt;'&gt;&lt;/p&gt;&lt;div&gt;&lt;table style="border-collapse:collapse;margin-top:20px;"&gt;&lt;tr style="height: 13px"&gt;&lt;td   style="width: 130px; text-align:left;border-color:#000000;min-width:130px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="9"  style="width: 266px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:266px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;September 30, 2010&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="9"  style="width: 266px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:266px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;December 31, 2009&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height: 12px"&gt;&lt;td   style="width: 130px; text-align:left;border-color:#000000;min-width:130px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="4"  style="width: 123px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:123px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Actual &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="4"  style="width: 123px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:123px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Minimum Required &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="4"  style="width: 123px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:123px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Actual &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="4"  style="width: 123px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:123px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Minimum Required &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height: 13px"&gt;&lt;td   style="width: 130px; text-align:left;border-color:#000000;min-width:130px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="2"  style="width: 68px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:68px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Amount &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Ratio &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="2"  style="width: 68px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:68px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Amount &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Ratio &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="2"  style="width: 68px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:68px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Amount &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Ratio &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="2"  style="width: 68px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:68px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Amount &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;Ratio &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height: 8px"&gt;&lt;td   style="width: 130px; text-align:left;border-color:#000000;min-width:130px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:56px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:43px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:56px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:43px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:56px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:43px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:56px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:center;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:43px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height: 14px"&gt;&lt;td   style="width: 130px; text-align:left;border-color:#000000;min-width:130px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td colspan="18"  style="width: 540px; text-align:center;border-color:#000000;min-width:540px;"&gt;&lt;font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;"&gt;($ in thousands)&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height: 14px"&gt;&lt;td   style="width: 130px; text-align:left;border-color:#000000;min-width:130px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;Tier-1 Leverage &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"&gt;$&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;739,226&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;13.03&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"&gt;$&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;283,737&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;5.00&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"&gt;$&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;699,323&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;12.80&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"&gt;$&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;273,153&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;5.00&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height: 13px"&gt;&lt;td   style="width: 130px; text-align:left;border-color:#000000;min-width:130px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;Tier-1 Risk-Based Capital &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;739,226&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;16.99&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;261,110&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;6.00&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;699,323&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;16.19&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;259,175&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;6.00&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height: 14px"&gt;&lt;td   style="width: 130px; text-align:left;border-color:#000000;min-width:130px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;Total Risk-Based Capital &lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;794,610&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;18.26&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;652,776&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;15.00&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;754,580&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;17.47&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 56px; text-align:right;border-color:#000000;min-width:56px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;647,938&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"&gt;&amp;#160;&lt;/td&gt;&lt;td   style="width: 43px; text-align:right;border-color:#000000;min-width:43px;"&gt;&lt;font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"&gt;15.00&lt;/font&gt;&lt;/td&gt;&lt;td   style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;p style='margin-top: 0pt; margin-bottom: 0pt;'&gt;&lt;/p&gt;&lt;p style='margin-top:12pt; margin-bottom:0pt'&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;margin-left:11px;"&gt;The California Department of Financial Institutions (the &amp;#8220;DFI&amp;#8221;) approval order requires that CapitalSource Bank, during the first three years of operations, maintain a minimum ratio of tangible shareholder's equity to total tangible assets of at least 10.00%. As of &lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;September 30, 2010&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt; &lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;and &lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;December 31, 2009&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;,&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt; CapitalSource Bank satisfied the DFI capital ratio requirement with ratios of &lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt;12.85%&lt;/font&gt;&lt;font style="font-family:Times New Roman;font-size:10pt;"&gt; and 12.32%, respectively.&lt;/font&gt;&lt;/p&gt;</NonNumbericText>
          <NonNumericTextHeader>Note&amp;#160;15.&amp;#160;&amp;#160;Bank Regulatory Capital&amp;#160;CapitalSource Bank is subject to various regulatory capital requirements established by federal and state</NonNumericTextHeader>
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
      </Cells>
      <OriginalInstanceReportColumns />
      <ElementDataType>us-types:textBlockItemType</ElementDataType>
      <SimpleDataType>textblock</SimpleDataType>
      <ElementDefenition>This element may be used to capture the complete disclosure for banks, savings institutions, and credit unions, for regulatory capital requirements imposed by the Federal Reserve System (FRB), the Federal Deposit Insurance Corporation (FDIC), the Office of Thrift Supervision (OTS) or for any state imposed capital requirements, as applicable.  The disclosure may include (1) a description of regulatory capital requirements (a) for capital adequacy purposes and (b) established by the prompt corrective action provisions of Section 38 of the Federal Depository Insurance Act; (2) the actual or possible material effects of noncompliance with such requirements; (3) whether the entity is in compliance with the regulatory capital requirements including (a) required and actual ratios and amounts of Tier 1 leverage, Tier 1 risk-based, and total risk-based capital, tangible capital (for savings institutions), and Tier 3 capital for market risk (for certain banks and bank holding companies), (b) factors that may significantly affect capital adequacy; (4) the prompt corrective action category in which the entity was classified as of its most recent notification; (5) whether management believes any conditions or events since notification have changed the entity's category. Also may include additional information that might be disclosed in situations where substantial doubt about the entity's ability to continue as a going concern for a reasonable period of time.</ElementDefenition>
      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher AICPA
 -Name Audit and Accounting Guide (AAG)
 -Number AAG-DEP
 -Chapter 17
 -Paragraph 15, 16, 17
 -IssueDate 2006-05-01

</ElementReferences>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
  </Rows>
  <Footnotes />
  <NumberOfCols>1</NumberOfCols>
  <NumberOfRows>2</NumberOfRows>
  <HasScenarios>false</HasScenarios>
  <MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel>
  <SharesRoundingLevel>UnKnown</SharesRoundingLevel>
  <PerShareRoundingLevel>UnKnown</PerShareRoundingLevel>
  <HasPureData>false</HasPureData>
  <SharesShouldBeRounded>true</SharesShouldBeRounded>
</InstanceReport>
