Retirement Tax Calculator

Retirement Tax Calculator

Calculate taxes on retirement income from 401(k), IRA, pension, and Social Security. Plan withdrawals to minimize lifetime tax burden.

Taxation by Retirement Account Type

Account Type	Contributions	Growth	Withdrawals
Traditional 401(k)/IRA	Pre-tax (deductible)	Tax-deferred	Fully taxed
Roth 401(k)/IRA	After-tax	Tax-free	Tax-free
Pension	Pre-tax	N/A	Fully taxed
Social Security	N/A	N/A	0-85% taxed
Taxable Brokerage	After-tax	Capital gains	Capital gains rates

Retirement Tax Calculator

``javascript function calculateRetirementTax(income) { const { traditional401k, rothIra, pension, socialSecurity, otherIncome } = income; const filingStatus = income.filingStatus || 'single';

// Taxable income calculation let taxableIncome = traditional401k + pension + otherIncome;

// Social Security taxation (0%, 50%, or 85%) const provisionalIncome = taxableIncome + (socialSecurity * 0.5); const ssThresholds = { single: [25000, 34000], married: [32000, 44000] }; const thresholds = ssThresholds[filingStatus];

let taxableSS = 0; if (provisionalIncome > thresholds[1]) { taxableSS = socialSecurity * 0.85; } else if (provisionalIncome > thresholds[0]) { taxableSS = socialSecurity * 0.50; }

taxableIncome += taxableSS;

// Roth distributions are tax-free // rothIra: not added to taxable income

const standardDeduction = filingStatus === 'married' ? 29200 : 14600; const finalTaxable = Math.max(0, taxableIncome - standardDeduction); const federalTax = calculateFederalTax(finalTaxable, filingStatus);

return { grossRetirementIncome: traditional401k + rothIra + pension + socialSecurity, taxableIncome: taxableIncome.toFixed(2), taxableSocialSecurity: taxableSS.toFixed(2), federalTax: federalTax.toFixed(2), effectiveRate: ((federalTax / (taxableIncome + rothIra)) * 100).toFixed(2) + '%' }; } ``

Social Security Taxation Thresholds

Filing Status	0% Taxed	50% Taxed	85% Taxed
Single	Under $25k	$25k-$34k	Over $34k
Married Joint	Under $32k	$32k-$44k	Over $44k

*Based on provisional income (half SS + other income)*

Withdrawal Strategies

Strategy	Description	Best For
Roth first	Withdraw tax-free funds early	High future tax rates expected
Traditional first	Use low-tax years	Lower tax brackets now
Tax-bracket filling	Withdraw to top of current bracket	Optimizing across brackets
Roth conversions	Convert traditional to Roth gradually	Long-term tax reduction

Worked Through the Brackets

On $75,000 of gross income, filing single, taking the $14,600 standard deduction — so $60,400 of taxable income:

Bracket	Range	Income taxed here	Tax
10%	$0 – $11,600	$11,600	$1,160
12%	$11,600 – $47,150	$35,550	$4,266
22%	$47,150 – $100,525	$13,250	$2,915
Total			$8,341

That is a 11.1% effective rate against a 22% marginal rate. The two answer different questions: the marginal rate is what the next dollar costs, and it is the one that decides whether a 401(k) contribution or an extra shift is worth it. The effective rate is what you actually paid, and it is the one to budget against.

The Same Income, Different Sources

Source	Federal tax on it
Wages (above)	$8,341
Self-employment profit	$8,341 income tax plus $10,597 SE tax
Long-term capital gain of $10,000	$1,500 at 15%

Where income comes from changes the bill more than how much of it there is. A self-employed filer at this level pays roughly $10,597 that an employee never sees, because there is no employer paying the other half of FICA.