How to Use the Salary Calculator
Your salary figure is rarely your actual income. The number on your offer letter is gross pay — what your employer pays before the government takes its share. This salary calculator bridges that gap, converting any pay rate into every frequency you might need while showing exactly how federal tax, state tax, Social Security, and Medicare reduce your paycheck down to real take-home money.
Start by selecting your pay frequency and entering your current pay amount. Hourly workers should enter their base rate; salaried employees enter their annual, monthly, or per-paycheck figure. The calculator converts everything automatically. Then work through the remaining fields — filing status, state, deductions, and pre-tax contributions — each of which meaningfully changes your net result.
Converting Between Pay Frequencies
Every pay frequency maps to a specific multiplier against the annual figure. Annual divides by 12 for monthly, by 24 for semi-monthly, by 26 for biweekly, by 52 for weekly, by 260 for daily (assuming 5-day weeks), and by 2,080 for hourly (40-hour weeks, 52 weeks). Semi-monthly and biweekly are frequently confused: both produce the same annual gross, but biweekly yields 26 paychecks versus 24, so individual checks are slightly smaller.
Two months each year, biweekly employees receive a "three paycheck month." Many financial advisors recommend treating that third paycheck as a windfall — directing it entirely to an emergency fund, debt payoff, or investment — rather than absorbing it into routine spending.
How Overtime Pay Is Calculated
Under the Fair Labor Standards Act, non-exempt employees earn at least 1.5× their regular rate for every hour beyond 40 in a workweek. If you earn $22/hour and regularly work 45 hours, your weekly gross is not simply $22 × 45 = $990. It is ($22 × 40) + ($22 × 1.5 × 5) = $880 + $165 = $1,045. Over 52 weeks, that overtime premium adds $8,580 to annual gross earnings — a difference this calculator surfaces immediately in the conversion table.
Why Pre-Tax Contributions Change Everything
Contributing to a traditional 401(k) or HSA reduces your taxable income before any bracket is applied. This is not just deferred gratification — it is a real, immediate tax reduction. Consider Priya, a single filer earning $72,000 in 2024. Without contributions, her taxable income (after the $14,600 standard deduction) is $57,400, placing her firmly in the 22% bracket. If she contributes $10,000 to her 401(k), taxable income drops to $47,400 — and she saves roughly $2,200 in federal taxes while building retirement wealth.
The 2024 401(k) contribution limit is $23,000 for employees under 50, and $30,500 for those 50 and older (the $7,500 catch-up provision). The HSA limit is $4,150 for individual coverage and $8,300 for family plans. This calculator enforces these limits, flagging if you enter an over-limit amount.
State Income Tax: A Major Variable
State income tax can swing your effective total rate by 6–13 percentage points depending on where you live. California's top marginal rate of 13.3% is the highest in the nation; New York reaches 10.9%. Florida, Texas, and seven other states charge nothing. For a $100,000 salary, moving from California to Texas saves roughly $6,000–$8,000 in state taxes annually — more than many annual raises. This calculator applies each state's 2024 and 2025 rate structure accurately, including progressive brackets where they exist.
FICA Taxes: The Taxes Nobody Talks About
Social Security (6.2%) and Medicare (1.45%) are taken from every paycheck automatically and rarely appear in salary conversations. For a $75,000 salary, FICA adds up to $5,737 per year — nearly $478 per month. High earners pay an additional 0.9% Medicare surtax on wages above $200,000 (single) or $250,000 (married filing jointly). Social Security tax stops once wages hit the annual wage base: $168,600 in 2024, $176,100 in 2025. This calculator computes all three tiers correctly.
Important Limitations
This calculator estimates income tax based on salary and wages. It does not calculate the Alternative Minimum Tax, long-term capital gains rates (0%, 15%, or 20%), Net Investment Income Tax, self-employment tax, or local/city income taxes (which apply in New York City, Philadelphia, and a handful of other cities). For those situations, consult a CPA or use IRS-approved tax software.