401(k) Contributions vs. Take-Home Pay: The Real Tradeoff
Increasing your 401(k) contribution feels like it should cost you dollar-for-dollar on your paycheck — but because traditional 401(k) contributions are pre-tax, the real hit to your take-home pay is smaller than the percentage you chose. Here's the actual math. Why a 401(k) contribution doesn't cost you the full amount Traditional 401(k) contributions come out of your paycheck before federal income tax is calculated. That means every dollar you contribute lowers your taxable income by a dollar — so you're not just saving for retirement, you're also paying less tax right now. The result: increasing your contribution by, say, $100 doesn't reduce your take-home pay by $100. It reduces it by less, because part of that $100 would have gone to federal tax anyway. Worked example: $70,000 salary, increasing 401(k) from 5% to 10% Single filer, biweekly pay, in the 12% federal bracket: At 5% contribution: Gross pay per paycheck: $2,692.31 401(k) contribution:...