Based on the worksheet provided in the most recent IRS Publication 915, your Social Security benefit(s) of $98,000 will be 54% taxable increasing your taxable income by $52,750 and creating a federal income tax liability of $11,605.<table class='pure-table' role='grid'><tr><th colspan='2' class='section'>Social Security Taxation - IRS Publication 915</th><th></th></tr><tr><td width="1">1</td><td>Total Social Security benefit</td><td>$98,000</td></tr><tr><td width="1">2</td><td>One-half of line #1</td><td>$49,000</td></tr><tr><td width="1">3</td><td>Adjusted Gross Income items (without 'adjustments')</td><td>$50,000</td></tr><tr><td width="1">4</td><td>Add back tax-free interest</td><td>$0</td></tr><tr><td width="1">5</td><td>Add lines 2,3 and 4</td><td>$99,000</td></tr><tr><td width="1">6</td><td>Adjustments (deductible IRA contributions)</td><td>$0</td></tr><tr><td width="1">7</td><td>Subtract line 6 from line 5</td><td>$99,000</td></tr><tr><td width="1">8</td><td>MAGI base amount</td><td>$32,000</td></tr><tr><td width="1">9</td><td>Subtract base amount (line 8 from line 7)</td><td>$67,000</td></tr><tr><td width="1">10</td><td>Enter factor based on filing status</td><td>$12,000</td></tr><tr><td width="1">11</td><td>Subtract 10 from 9 (min = 0)</td><td>$55,000</td></tr><tr><td width="1">12</td><td>Enter the smaller of line 9 or line 10</td><td>$12,000</td></tr><tr><td width="1">13</td><td>Enter one-half of line 12</td><td>$6,000</td></tr><tr><td width="1">14</td><td>Enter the smaller of line 2 and line 13</td><td>$6,000</td></tr><tr><td width="1">15</td><td>Multiply line 11 by 85% (min = 0)</td><td>$46,750</td></tr><tr><td width="1">16</td><td>Add lines 14 and 15</td><td>$52,750</td></tr><tr><td width="1">17</td><td>Multiply line 1 by 85%</td><td>$83,300</td></tr><tr><td width="1">18</td><td>Enter the smaller of line 16 or 17</td><td>$52,750</td></tr><tr><td width="1"></td><td><b>Taxable Social Security benefit</b></td><td>$52,750</td></tr><tr><td width="1"></td><td><b>Percent of Social Security benefit subject to taxation</b></td><td>54%</td></tr><tr><td width="1"></td><td><b>Estimated taxes due</b></td><td>$11,605</td></tr></table> <div id="chart1Container">Chart will load here</div> <script type="text/javascript"> <!-- var myChart1 = new FusionCharts( "Pie2D", "myChart1Id", "100%", "100%", "0", "1" ); myChart1.setXMLData("<chart showValues='1' showFCMenuItem='0' decimals='0' formatNumberScale='0' startingAngle='45' enableRotation='1' caption='Your Social Security Benefit' xAxisName='' numberPrefix='$' bgColor='FFFFFF' showBorder='1' borderColor='FFFFFF' borderThickness='1' canvasBgColor='ffffff' showAlternateHGridColor='0' plotGradientColor=''><set value='45250.0' label='Non-Taxable Portion of Benefit' color='06163a' /><set value='52750.0' label='Taxable Portion of Benefit' color='be5500' /></chart>"); // --> </script>