<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>0007 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><CurrencyCode /><FootnoteIndexer /><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios><MCU><KeyName /><CurrencySymbol /><contextRef><ContextID>From2013-01-01to2013-06-30</ContextID><EntitySchema>http://www.sec.gov/CIK</EntitySchema><EntityValue>0001494413</EntityValue><PeriodDisplayName /><PeriodType>duration</PeriodType><PeriodStartDate>2013-01-01T00:00:00</PeriodStartDate><PeriodEndDate>2013-06-30T00:00:00</PeriodEndDate><Segments /><Scenarios /></contextRef><UPS /><CurrencyCode /><OriginalCurrencyCode /></MCU><CurrencySymbol /><Labels><Label Key="CalendarSupplement" Id="0" Label="6 Months Ended" /><Label Key="Calendar" Id="1" Label="Jun. 30, 2013" /></Labels></Column></Columns><Rows><Row FlagID="0"><Id>1</Id><IsAbstractGroupTitle>true</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>1</Level><ElementName>us-gaap_AccountingPoliciesAbstract</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText /><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>xbrli:stringItemType</ElementDataType><SimpleDataType>string</SimpleDataType><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Accounting Policies [Abstract]</Label></Row><Row FlagID="0"><Id>2</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>2</Level><ElementName>us-gaap_SignificantAccountingPoliciesTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="From2013-01-01to2013-06-30" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;NOTE 2 - SUMMARY OF SIGNIFICANT ACCOUNTING
POLICIES&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;BASIS OF PRESENTATION&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;The accompanying unaudited financial
statements of Innovative Product Opportunities Inc. have been prepared without audit pursuant to the rules and regulations of the
Securities and Exchange Commission requirements for interim financial statements. Therefore, they do not include all of the information
and footnotes required by accounting principles generally accepted in the United States for complete financial statements. The
financial statements should be read in conjunction with the annual financial statements for the year ended December 31, 2012 of
Innovative Product Opportunities Inc. in our Form 10-K filed on April 15, 2013.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;The interim financial statements present
the balance sheets, statements of operations and cash flows of Innovative Product Opportunities Inc. The financial statements have
been prepared in accordance with accounting principles generally accepted in the United States.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;The interim financial information
is unaudited. In the opinion of management, all adjustments necessary to present fairly the financial position as of June 30, 2013
and the results of operations and cash flows presented herein have been included in the financial statements. All such adjustments
are of a normal and recurring nature. Interim results are not necessarily indicative of results of operations for the full year.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0"&gt;GOING CONCERN&lt;/p&gt;




&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;The Company's financial statements
are prepared in accordance with generally accepted accounting principles applicable to a going concern. This contemplates the realization
of assets and the liquidation of liabilities in the normal course of business. Currently, the Company does not have significant
operations or a source of revenue sufficient to cover its operation costs and allow it to continue as a going concern. The Company
has an accumulated deficit during development stage at June 30, 2013 and December 31, 2012 of $6,051,678 and $5,928,585, respectively.
The Company will be dependent upon the raising of additional capital through placement of its common stock in order to implement
its business plan. There can be no assurance that the Company will be successful in this situation. Accordingly, these factors
raise substantial doubt as to the Company's ability to continue as a going concern. These financial statements do not include any
adjustments relating to the recoverability and classification of recorded asset amounts or amounts and classifications of liabilities
that might result from this uncertainty. The Company is funding its initial operations by way of loans from its Chief Executive
Officer. The Company's officers and directors have committed to advancing certain operating costs of the Company.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;USE OF ESTIMATES AND ASSUMPTIONS&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;Preparation of the financial statements
in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions
that affect certain reported amounts and disclosures. Accordingly, actual results could differ from those estimates.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: center"&gt;&amp;#9;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;CASH AND CASH EQUIVALENTS&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;For purposes of the statement of cash
flows, the Company considers highly liquid financial instruments purchased with a maturity of three months or less to be cash equivalents.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;REVENUE RECOGNITION&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0 0 10pt; text-align: justify"&gt;The Company recognizes revenues
and the related costs when persuasive evidence of an arrangement exists, delivery and acceptance has occurred or service has been
rendered, the price is fixed or determinable, and collection of the resulting receivable is reasonably assured. Amounts invoiced
or collected in advance of product delivery or providing services are recorded as deferred revenue or customer deposits. The company
accrues for sales returns, bad debts, and other allowances based on its historical experience.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;Net sales under certain long-term
contracts for product design, which may provide for periodic payments, are recognized under the percentage-of-completion method.
Estimated cost-at-completion for these contracts are reviewed on a routine periodic basis, and adjustments are made periodically
to the estimated cost-at-completion, based on actual costs incurred, progress made, and estimates of the costs required to complete
the contractual requirements. When the estimated cost-at-completion exceeds the contract value, the contract is written down to
its net realizable value, and the loss resulting from cost overruns is immediately recognized.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;To properly match net sales with costs,
certain contracts may have revenue recognized in excess of billings (unbilled revenues), and other contracts may have billings
in excess of net sales recognized (customer deposits). Under long-term contracts, the prerequisites for billing the customer for
periodic payments generally involve the Company&amp;#146;s achievement of contractually specific, objective milestones (e.g., scheduling,
design concepts, source and engage prototyping, review, adjust and re-design, re-prototype and submit for field testing, source
and engage production modules, post production implementation).&lt;/p&gt;




&lt;p style="font: 11pt/normal Calibri, Helvetica, Sans-Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;NET LOSS PER SHARE&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;Basic net income (loss) per share
includes no dilution and is computed by dividing net income (loss) available to common stockholders by the weighted average number
of common shares outstanding for the period. Diluted earnings per share is computed by dividing earnings available to common shareholders
by the weighted average number of common shares outstanding for the period increased to include the number of additional common
shares that would have been outstanding if potentially dilutive securities had been issued. There were no potentially dilutive
securities outstanding during the periods presented.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;STOCK-BASED COMPENSATION&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;The Company measures stock-based compensation
at the grant date based on the fair value of the award and recognizes stock-based compensation expense over the requisite service
period.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;The Company also grants awards to
non-employees and determines the fair value of such stock-based compensation awards granted as either the fair value of the consideration
received or the fair value of the equity instruments issued, whichever is more reliably measurable. If the fair value of the equity
instruments issued is used, it is measured using the stock price and other measurement assumptions as of the earlier of (1) the
date at which a commitment for performance by the counterparty to earn the equity instruments is reached, or (2) the date at which
the counterparty's performance is completed.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;The Company adopted a stock option
plan on August 30, 2011, but has not granted any stock options.&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 0; text-align: justify"&gt;RECENT ACCOUNTING PRONOUNCEMENTS&lt;/p&gt;

&lt;p style="font: 10pt/normal Courier New, Courier, Monospace; margin: 9pt 0 0; text-align: justify"&gt;There have been no recent accounting
pronouncements or changes in accounting pronouncements that impacted the quarter ended June 30, 2013 or which are expected to impact
future periods, that were not already adopted and disclosed in prior periods.&lt;/p&gt;</NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for all significant accounting policies of the reporting entity.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef

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