Alabama Self-Employment Tax Calculator (2026)
Federal self-employment tax, federal income tax and Alabama state income tax on 1099 income, plus the quarterly estimated payment to set aside.
- Total tax
- $17,932
- Effective rate
- 24.9%
- Per quarter
- $4,483
- After-tax income
- $54,068
| Breakdown | |
|---|---|
| Net profit (income − expenses) | $72,000 |
| Self-employment tax | $10,173 |
| Social Security (12.4%) | $8,245 |
| Medicare (2.9%) | $1,928 |
| Federal income tax | $4,630 |
| Adjusted gross income | $66,913 |
| Standard deduction | −$16,100 |
| Qualified business income deduction (20%) | −$10,163 |
| Taxable income · marginal rate 12.0% | $40,651 |
| Alabama income tax | $3,128 |
| Total federal + state | $17,932 |
Estimated payments of $4,483 are due Apr 15, 2026, Jun 15, 2026, Sep 15, 2026, Jan 15, 2027.
How the 2026 numbers are calculated
- Net profit is your 1099 income minus deductible business expenses (Schedule C).
- Self-employment tax is 15.3% of 92.35% of net profit: 12.4% Social Security on the first $184,500 of combined wages and net earnings, plus 2.9% Medicare on all of it. An extra 0.9% Medicare tax applies above $200,000 ($250,000 married filing jointly).
- Adjusted gross income is net profit plus any W-2 wages, minus half of the self-employment tax.
- The standard deduction ($16,100 single, $32,200 married filing jointly, $24,150 head of household) and the 20% qualified business income deduction reduce taxable income. The QBI deduction starts phasing out above $201,750 of taxable income ($403,500 joint).
- Federal income tax is applied to what is left using the 2026 brackets for your filing status.
- The child tax credit ($2,200 per child under 17, $500 per other dependent) reduces income tax; up to $1,700 per child is refundable and can offset self-employment tax.
- The earned income credit for filers with children — up to $4,427 with one child, $7,316 with two, $8,231 with three or more — is fully refundable and phases out above $23,890 of income ($31,160 joint).
- Alabama income tax: calculated under the state's own rules, described below.
Alabama and self-employment income
Alabama's brackets are tiny — 2% on the first $500, 4% to $3,000 and 5% above ($1,000 / $6,000 joint) — so nearly all self-employment income is taxed at 5%. What sets Alabama apart is the deduction for federal income tax paid: the income tax on your federal return (after credits) comes off Alabama income, which lowers the effective rate to roughly 3.5%–4.5% for most freelancers. The standard deduction slides from $3,000 to $2,500 (single) or $8,500 to $5,000 (joint) as income rises, the personal exemption is $1,500 / $3,000, and each dependent is worth $1,000, $500 or $300 depending on income. Alabama does not allow the federal deduction for half of self-employment tax; instead the self-employment tax you actually pay during the year is deductible if you itemize — which beats the small standard deduction for many freelancers and is not reflected here.
Alabama rules used by this calculator (2026)
- Alabama applies 3 brackets from 2% to 5% for 2026.
- Standard deduction: $3,000 falling to $2,500 as income rises single, $8,500 falling to $5,000 as income rises married filing jointly, $5,200 falling to $2,500 as income rises head of household.
- Deductible: federal income tax paid (after credits), in full.
- Each filer gets a personal exemption that depends on income.
- The per-dependent deduction steps down as income rises.
- The schedule has fixed steps written into the statute: -$2.00 once non-business taxable income exceeds $99,999.
- No Alabama tax is due when income is $4,501 or less ($11,501 joint) before exemptions.
- Alabama does not allow the federal deduction for half of self-employment tax; state tax applies to net profit before that deduction.
- Some Alabama cities levy occupational license taxes (Birmingham 1%, Gadsden 2%, others); they fall mainly on wages earned inside the city and are not included here.
What an Alabama freelancer may still owe
- Alabama requires estimated payments (Form 40ES) when you expect to owe $500 or more.
- Some cities levy an occupational license tax (Birmingham 1%, Gadsden 2%) that mainly reaches wages earned in the city; every business also needs a state and city business privilege license.
Quarterly estimated tax deadlines (2026)
If you expect to owe $1,000 or more of federal tax for the year, the IRS expects four estimated payments (Form 1040-ES). Alabama runs its own estimated-payment schedule with its own threshold (see above); the calculator's per-quarter figure combines federal and state so you can set aside one amount.
- Federal payment 1: April 15, 2026
- Federal payment 2: June 15, 2026
- Federal payment 3: September 15, 2026
- Federal payment 4: January 15, 2027
The calculator splits your total into four equal payments. To avoid an underpayment penalty you can instead pay 100% of last year's total tax (110% if your prior-year AGI was over $150,000) spread across the four dates.
Common questions
Does Alabama tax self-employment income differently from wages?
For state income tax, net profit from self-employment is ordinary income like wages. The self-employment tax itself is federal only; Alabama does not add a state equivalent.
Is half of self-employment tax really deductible?
Yes, for federal tax. The employer-equivalent half is an adjustment to income on Schedule 1, which lowers your AGI and therefore your federal income tax. It does not reduce the self-employment tax itself. Alabama does not allow this deduction for state tax.
Does an LLC change these numbers?
A single-member LLC taxed as a sole proprietorship pays exactly what this calculator shows. Electing S-corporation status changes the math (salary plus distributions) and is outside this tool's scope.
What if I moved to Alabama during the year?
Income earned while you were a resident of another state is taxable there under that state's rules. This calculator assumes all income was earned as an Alabama resident.
Data sources and status
Federal figures for 2026: verified · last verified 2026-09-05
- IRS Rev. Proc. 2025-32 (2026 inflation adjustments, incorporating OBBBA changes)
- SSA 2026 COLA fact sheet — Social Security wage base
- 26 U.S.C. §199A as amended by Public Law 119-21 — QBI phase-in range widened to $75,000 / $150,000
- 26 U.S.C. §24 as amended by Public Law 119-21 — CTC $2,200, indexed from 2026
- IRS Form 1040-ES (2026) — estimated tax due dates
- IRS Rev. Proc. 2025-32 §4.06 — earned income credit amounts and §32(i) investment income limit
- IRC §6654(d)(1)(B)–(C), (e)(1) and (f) (required annual payment: lesser of 90% of the current year's tax or 100% of the prior year's, 110% when prior-year AGI exceeds $150,000 / $75,000 MFS; no penalty when the tax less withholding is under $1,000; 'tax' = income tax + SE tax less credits other than withholding), read at law.cornell.edu; Form 1040-ES instructions, 'Who Must Pay Estimated Tax' and the Estimated Tax Worksheet
Alabama figures for 2026: verified · last verified 2026-09-08
- Enrolled H.B. 527 of 2026 (Act adding the 2026–2028 overtime deduction), which restates Code of Alabama §40-18-15(b) in full with the 2022+ standard deduction amounts unchanged — read as ALISON's bill PDF on 2026-09-07
- Alabama Department of Revenue — 2025 Form 40 booklet (rates, tax table, exemption tiers, federal income tax deduction worksheet), none of which is indexed; the 2026 booklet is not yet published
- Alabama Department of Revenue — individual income tax rates / FAQ page
- Alabama Department of Revenue — 2025 Form 40 booklet, lines 17–27 and Schedule OC: no earned income credit, child credit or low-income credit exists; the federal EIC and additional child tax credit only reduce the federal income tax deduction