<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xmlns="http://www.sec.gov/edgar/nmfp" xmlns:com="http://www.sec.gov/edgar/common" xmlns:invest="http://www.sec.gov/edgar/invest" xmlns:part1="http://www.sec.gov/edgar/nmfpfund" xmlns:part2="http://www.sec.gov/edgar/nmfpsecurities" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sec.gov/edgar/nmfp eis_NMFP_Submission.xsd">
  <submissionType>N-MFP</submissionType>
  <liveTestFlag>LIVE</liveTestFlag>


  <isThisElectronicCopyOfPaperFormat>N</isThisElectronicCopyOfPaperFormat>
  <DocumentPeriodEndDate>2016-03-31</DocumentPeriodEndDate>
  <EntityCentralIndexKey>0000747576</EntityCentralIndexKey>

  <seriesId>S000008929</seriesId>
  <totalClassesInSeries>4</totalClassesInSeries>
  <isThisFinalFiling>N</isThisFinalFiling>
  <isFundLiquidating>N</isFundLiquidating>
  <isFundMergingWithOrBeingAcquiredByAnotherFund>N</isFundMergingWithOrBeingAcquiredByAnotherFund>
  <hasFundAcquiredOrMergedWithAnotherFundSinceLastFiling>N</hasFundAcquiredOrMergedWithAnotherFundSinceLastFiling>
  <seriesLevelInformation>
    <part1:ContainedFileInformationFileNumber>002-91556</part1:ContainedFileInformationFileNumber>
    <part1:investmentAdviserList>
      <part1:adviser>
        <part1:adviserName>Legg Mason Partners Fund Advisor LLC</part1:adviserName>
        <part1:adviserFileNumber>801-66785</part1:adviserFileNumber>
      </part1:adviser>
    </part1:investmentAdviserList>
    <part1:subAdviserList>
      <part1:subAdviser>
        <part1:adviserName>Western Asset Management Company</part1:adviserName>
        <part1:adviserFileNumber>801-08162</part1:adviserFileNumber>
      </part1:subAdviser>
    </part1:subAdviserList>
    <part1:independentPublicAccountant>
      <part1:name>KPMG LLP</part1:name>
      <part1:city>New York</part1:city>
      <part1:state>NY</part1:state>
    </part1:independentPublicAccountant>
    <part1:administratorList>
      <part1:administrator>None </part1:administrator>
    </part1:administratorList>
    <part1:transferAgentList>
      <part1:transferAgent>
        <part1:name>Boston Financial Data Services, Inc.</part1:name>
        <part1:EntityCentralIndexKey>0000275143</part1:EntityCentralIndexKey>
        <part1:fileNumber>84-00896</part1:fileNumber>
      </part1:transferAgent>
    </part1:transferAgentList>
    <part1:isThisFeederFund>Y</part1:isThisFeederFund>
    <part1:masterFund>
      <part1:EntityCentralIndexKey>0001140869</part1:EntityCentralIndexKey>
      <part1:EntityRegistrantName>Tax Free Reserves Portfolio</part1:EntityRegistrantName>
      <part1:seriesIdentifier>S000018043</part1:seriesIdentifier>
    </part1:masterFund>
    <part1:isThisMasterFund>N</part1:isThisMasterFund>
    <part1:isThisSeriesPrimarilyUsedToFundInsuranceCompanySeperateAccounts>N</part1:isThisSeriesPrimarilyUsedToFundInsuranceCompanySeperateAccounts>
    <part1:InvestmentTypeDomain>Other Tax Exempt Fund</part1:InvestmentTypeDomain>
    <part1:dollarWeightedAveragePortfolioMaturity>7</part1:dollarWeightedAveragePortfolioMaturity>
    <part1:dollarWeightedAverageLifeMaturity>7</part1:dollarWeightedAverageLifeMaturity>
    <part1:AvailableForSaleSecuritiesAmortizedCost>186689604.02</part1:AvailableForSaleSecuritiesAmortizedCost>
    <part1:OtherAssets>112116.99</part1:OtherAssets>
    <part1:Liabilities>127697.42</part1:Liabilities>
    <part1:AssetsNet>186674023.59</part1:AssetsNet>
    <part1:MoneyMarketSevenDayYield>0.0035</part1:MoneyMarketSevenDayYield>
    <part1:seriesShadowPrice>
      <part1:netValuePerShareIncludingCapitalSupportAgreement>0.9999</part1:netValuePerShareIncludingCapitalSupportAgreement>
      <part1:dateCalculatedFornetValuePerShareIncludingCapitalSupportAgreement>2016-03-31</part1:dateCalculatedFornetValuePerShareIncludingCapitalSupportAgreement>
      <part1:netValuePerShareExcludingCapitalSupportAgreement>0.9999</part1:netValuePerShareExcludingCapitalSupportAgreement>
      <part1:dateCalculatedFornetValuePerShareExcludingCapitalSupportAgreement>2016-03-31</part1:dateCalculatedFornetValuePerShareExcludingCapitalSupportAgreement>
    </part1:seriesShadowPrice>
  </seriesLevelInformation>
  <classLevelInformationList>
    <part1:classLevelInformation>
      <part1:classId>C000024261</part1:classId>
      <part1:minInitialInvestment>1000.00</part1:minInitialInvestment>
      <part1:netAssetsOfClass>61856078.17</part1:netAssetsOfClass>
      <part1:netAssetValuePerShare>1.00</part1:netAssetValuePerShare>
      <part1:netShareholderFlowActivityForMonthEnded>2075738.78</part1:netShareholderFlowActivityForMonthEnded>
      <part1:grossSubscriptionsForMonthEnded>25333794.69</part1:grossSubscriptionsForMonthEnded>
      <part1:grossRedemptionsForMonthEnded>23258055.91</part1:grossRedemptionsForMonthEnded>
      <part1:sevenDayNetYield>0.0002</part1:sevenDayNetYield>
      <part1:classShadowPrice>
        <part1:netAssetValuePerShareIncludingCapitalSupportAgreement>
          <part1:value>0.9999</part1:value>
          <part1:dateAsOfWhichValueWasCalculated>2016-03-31</part1:dateAsOfWhichValueWasCalculated>
        </part1:netAssetValuePerShareIncludingCapitalSupportAgreement>
        <part1:netAssetValuePerShareExcludingCapitalSupportAgreement>
          <part1:value>0.9999</part1:value>
          <part1:dateAsOfWhichValueWasCalculated>2016-03-31</part1:dateAsOfWhichValueWasCalculated>
        </part1:netAssetValuePerShareExcludingCapitalSupportAgreement>
      </part1:classShadowPrice>
    </part1:classLevelInformation>
    <part1:classLevelInformation>
      <part1:classId>C000090908</part1:classId>
      <part1:minInitialInvestment>1000.00</part1:minInitialInvestment>
      <part1:netAssetsOfClass>123863369.93</part1:netAssetsOfClass>
      <part1:netAssetValuePerShare>1.00</part1:netAssetValuePerShare>
      <part1:netShareholderFlowActivityForMonthEnded>-5433156.14</part1:netShareholderFlowActivityForMonthEnded>
      <part1:grossSubscriptionsForMonthEnded>13098429.96</part1:grossSubscriptionsForMonthEnded>
      <part1:grossRedemptionsForMonthEnded>18531586.10</part1:grossRedemptionsForMonthEnded>
      <part1:sevenDayNetYield>0.0002</part1:sevenDayNetYield>
      <part1:classShadowPrice>
        <part1:netAssetValuePerShareIncludingCapitalSupportAgreement>
          <part1:value>0.9999</part1:value>
          <part1:dateAsOfWhichValueWasCalculated>2016-03-31</part1:dateAsOfWhichValueWasCalculated>
        </part1:netAssetValuePerShareIncludingCapitalSupportAgreement>
        <part1:netAssetValuePerShareExcludingCapitalSupportAgreement>
          <part1:value>0.9999</part1:value>
          <part1:dateAsOfWhichValueWasCalculated>2016-03-31</part1:dateAsOfWhichValueWasCalculated>
        </part1:netAssetValuePerShareExcludingCapitalSupportAgreement>
      </part1:classShadowPrice>
    </part1:classLevelInformation>
    <part1:classLevelInformation>
      <part1:classId>C000090909</part1:classId>
      <part1:minInitialInvestment>1000.00</part1:minInitialInvestment>
      <part1:netAssetsOfClass>110365.65</part1:netAssetsOfClass>
      <part1:netAssetValuePerShare>1.00</part1:netAssetValuePerShare>
      <part1:netShareholderFlowActivityForMonthEnded>-1561.05</part1:netShareholderFlowActivityForMonthEnded>
      <part1:grossSubscriptionsForMonthEnded>1.77</part1:grossSubscriptionsForMonthEnded>
      <part1:grossRedemptionsForMonthEnded>1562.82</part1:grossRedemptionsForMonthEnded>
      <part1:sevenDayNetYield>0.0002</part1:sevenDayNetYield>
      <part1:classShadowPrice>
        <part1:netAssetValuePerShareIncludingCapitalSupportAgreement>
          <part1:value>0.9999</part1:value>
          <part1:dateAsOfWhichValueWasCalculated>2016-03-31</part1:dateAsOfWhichValueWasCalculated>
        </part1:netAssetValuePerShareIncludingCapitalSupportAgreement>
        <part1:netAssetValuePerShareExcludingCapitalSupportAgreement>
          <part1:value>0.9999</part1:value>
          <part1:dateAsOfWhichValueWasCalculated>2016-03-31</part1:dateAsOfWhichValueWasCalculated>
        </part1:netAssetValuePerShareExcludingCapitalSupportAgreement>
      </part1:classShadowPrice>
    </part1:classLevelInformation>
    <part1:classLevelInformation>
      <part1:classId>C000090910</part1:classId>
      <part1:minInitialInvestment>1000.00</part1:minInitialInvestment>
      <part1:netAssetsOfClass>844209.84</part1:netAssetsOfClass>
      <part1:netAssetValuePerShare>1.00</part1:netAssetValuePerShare>
      <part1:netShareholderFlowActivityForMonthEnded>-181768.03</part1:netShareholderFlowActivityForMonthEnded>
      <part1:grossSubscriptionsForMonthEnded>15.08</part1:grossSubscriptionsForMonthEnded>
      <part1:grossRedemptionsForMonthEnded>181783.11</part1:grossRedemptionsForMonthEnded>
      <part1:sevenDayNetYield>0.0002</part1:sevenDayNetYield>
      <part1:classShadowPrice>
        <part1:netAssetValuePerShareIncludingCapitalSupportAgreement>
          <part1:value>0.9999</part1:value>
          <part1:dateAsOfWhichValueWasCalculated>2016-03-31</part1:dateAsOfWhichValueWasCalculated>
        </part1:netAssetValuePerShareIncludingCapitalSupportAgreement>
        <part1:netAssetValuePerShareExcludingCapitalSupportAgreement>
          <part1:value>0.9999</part1:value>
          <part1:dateAsOfWhichValueWasCalculated>2016-03-31</part1:dateAsOfWhichValueWasCalculated>
        </part1:netAssetValuePerShareExcludingCapitalSupportAgreement>
      </part1:classShadowPrice>
    </part1:classLevelInformation>
  </classLevelInformationList>
  <scheduleOfPortfolioSecuritiesList>
    <part2:scheduleOfPortfolioSecurities>
      <part2:InvestmentIssuer>Tax Free Reserves Portfolio                        </part2:InvestmentIssuer>
      <part2:InvestmentTitle>Tax Free Reserves Portfolio                         </part2:InvestmentTitle>
      <part2:InvestmentIdentifier>876939992</part2:InvestmentIdentifier>
      <part2:InvestmentTypeDomain>Investment Company</part2:InvestmentTypeDomain>
      <part2:isFundTreatingAsAcquisitionUnderlyingSecurities>N</part2:isFundTreatingAsAcquisitionUnderlyingSecurities>
      <part2:rating>First Tier Security</part2:rating>
      <part2:designatedNRSROList>
        <part2:designatedNRSRO>
          <part2:RAN>N/A</part2:RAN>
          <part2:R>N/A</part2:R>
        </part2:designatedNRSRO>
      </part2:designatedNRSROList>
      <part2:InvestmentMaturityDate>2016-04-01</part2:InvestmentMaturityDate>
      <part2:finalLegalInvestmentMaturityDate>2016-04-01</part2:finalLegalInvestmentMaturityDate>
      <part2:doesSecurityHaveDemandFeature>N</part2:doesSecurityHaveDemandFeature>
      <part2:doesSecurityHaveGuarantee>N</part2:doesSecurityHaveGuarantee>
      <part2:doesSecurityHaveEnhancementsOnWhichFundRelying>N</part2:doesSecurityHaveEnhancementsOnWhichFundRelying>
      <part2:InvestmentOwnedBalancePrincipalAmount>186689604.02</part2:InvestmentOwnedBalancePrincipalAmount>
      <part2:AvailableForSaleSecuritiesAmortizedCost>186689604.02</part2:AvailableForSaleSecuritiesAmortizedCost>
      <part2:InvestmentOwnedPercentOfNetAssets>1.0000</part2:InvestmentOwnedPercentOfNetAssets>
      <part2:isThisIlliquidSecurity>N</part2:isThisIlliquidSecurity>
      <part2:InvestmentOwnedAtFairValue>186689604.02</part2:InvestmentOwnedAtFairValue>
      <part2:valueOfSecurityExcludingValueOfCapitalSupportAgreement>186689604.02</part2:valueOfSecurityExcludingValueOfCapitalSupportAgreement>
    </part2:scheduleOfPortfolioSecurities>
  </scheduleOfPortfolioSecuritiesList>
</edgarSubmission>
