2024 tax year · client-side

effective tax ratefederal taxSE taxFICA1099W-2brackettake-home

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Effective Tax Rate Calculator

Enter your income, filing status, and income type — see your real combined tax rate (federal + FICA/SE + state), how each dollar is taxed by bracket, and take-home pay at different income levels.

Where this fits

🧾 Tax Tax Stack Going 1099 Freelancers Employees

This tool lives inside Tax Stack + Going 1099 and is most useful for freelancers and employees.

401(k) Limit 2024$23,000(+$7,500 catch-up 50+)

Roth IRA Limit$7,000(MAGI phase-out applies)

S&P 500 Avg Return~10%/yr(nominal, historical)

Income type

Filing status

Annual income & deductions

Gross Income / Year

Net business revenue (before SE tax)

State Tax Rate

Use your state's effective rate (0 = no state income tax)

Pre-Tax Deductions

401k, HSA, FSA contributions — reduces taxable income

Other Income

Dividends, interest, capital gains, side income

Combined Effective Tax Rate

28.7%

Marginal federal rate: 22% · Total tax: $24K

Take-Home Pay

$61K

$5K/mo

Where your tax dollars go

Federal Income Tax

$9K10.1%

Self-Employment Tax

$12K14.1%

State & Local Tax

$4K4.5%

Take-Home

$61K71.3%

Federal bracket breakdown — 2024

Bracket	Income in bracket	Tax in bracket
10%	$12K	$1K
12%	$36K	$4K
22%	$14K	$3K
Total	$61K	$9K

What changes at different income levels?

Scenario	Gross Income	Effective Rate	Take-Home
-25K income	$60K	25.8%	$45K
-10K income	$75K	27.3%	$55K
Current	$85K	28.7%	$61K
+10K income	$95K	29.8%	$67K
+25K income	$110K	31.1%	$76K

SE tax base (92.35% adjustment)

Net SE Earnings = Gross × 0.9235

$85K × 0.9235

= $78,498

0.9235 = 1 − 7.65%. This excludes the employer-equivalent share of FICA, mirroring how W-2 wages are treated.

IRS Schedule SE, Line 4a; IRC §1402(a)(12)

Self-Employment Tax (FICA)

SE Tax = SE Base × 15.3% (12.4% SS + 2.9% Medicare)

$78,498 × 0.153

= $12,010

You pay both employee and employer FICA as a 1099 contractor. Social Security portion (12.4%) caps at the 2024 wage base of $168,600; Medicare (2.9%) has no cap.

IRC §1401; SSA Wage Base 2024; IRS Publication 334, Ch. 4

Half-SE Deduction (above-the-line)

Deduction = SE Tax × 50%

$12,010 × 0.5

= $6,005

Reduces AGI before computing income tax. Above-the-line — applies whether or not you itemize.

IRS Form 1040, Schedule 1, Line 15; IRC §164(f)

Adjusted Gross Income (AGI)

AGI = Gross + Other Income − Pre-tax Deductions − ½ SE Deduction

$85K + $0 − $3K − $6K

= $76K

AGI is the master number on your 1040 — it gates eligibility for credits, deductions, IRA contributions, and ACA subsidies.

IRS Form 1040, Line 11; IRC §62

Taxable Income

Taxable = AGI − Standard Deduction

$76K − $15K

= $61K

2024 standard deduction: $14,600 (single). Itemize only if your itemized deductions exceed this.

IRS Rev. Proc. 2023-34; IRS Form 1040, Line 15

Federal Income Tax (progressive brackets)

Tax = Σ (income in bracket × bracket rate)

$61K taxed across 2024 brackets

= $8,560 → 10.1% effective

Marginal rate: 22% — but you only pay that on dollars above the bracket threshold. Effective rate is always lower than marginal due to bracket stacking.

IRS Rev. Proc. 2023-34, Table 1; IRC §1

State Income Tax

State Tax ≈ AGI × State Rate

$76K × 5%

= $3,800

State tax bases vary widely (some use AGI, some use federal taxable income). Nine states have no income tax. This estimate uses your effective state rate.

Tax Foundation: State Individual Income Tax Rates 2024

Combined Effective Rate

Effective Rate = Total Tax ÷ Gross Income

$24,370 ÷ $85K

= 28.7% → $61K take-home

Includes federal income, state, and (for SE) FICA. The single most useful number for budgeting and pricing decisions.

Derived from IRS Form 1040, Schedule SE, and state tax schedule

Key insight

Self-employed contractors pay 15.3% SE tax on top of federal income tax — but you can deduct half of it before computing income tax. This is why 1099 rates feel so high vs. W-2.

Use this result in →

W-2 vs 1099 →1099 Quarterly Tax →Profit Margin →

#ShowYourWork

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