2026 tax year · US · Updated May 24, 2026

Side Hustle Tax Calculator

Most calculators handle one income stream. This one handles all of them. Add every hustle you run — delivery, freelance work, Etsy, consulting, whatever — and instantly see your combined take-home after SE tax, deductions, and your state's income tax.

Runs entirely in your browser — your numbers are never sent to a server.

2026 estimates. Excludes state standard deductions — actual tax may be lower. Consult a CPA for filing advice.

Your side hustle stacks on top of this, so it sets the tax bracket your profit lands in.

Hustle #1

Software, materials, supplies, platform fees
Deducted at $0.725/mi — don't also include gas in expenses

How multi-hustle taxation works

Every dollar of side hustle income flows through your Schedule C at tax time. The IRS doesn't care which platform paid you — DoorDash, Etsy, and freelance clients all combine into one self-employment income figure. That combined net profit is what triggers SE tax.

This matters because SE tax (15.3%) hits your entire combined net profit before any other deductions. If you run three hustles that net $10,000 each, you owe SE tax on $30,000 — not $10,000 per hustle.

The three deductions that move the needle most

  1. IRS standard mileage rate — $0.725 per business mile in 2026 (Notice 2026-10, up 2.5 cents from 2025). This alone can wipe out a large share of delivery and rideshare income. 10,000 miles = $7,250 off your taxable income.
  2. Business expenses— software subscriptions (design tools, accounting apps), materials and supplies, platform fees, a business phone plan. Anything “ordinary and necessary” for the specific hustle is deductible on Schedule C.
  3. Half the SE tax— the IRS lets you deduct 50% of your self-employment tax from gross income (an above-the-line deduction). This doesn't reduce SE tax itself, but it lowers the income exposed to federal and state income tax.

State tax: the number most calculators skip

Nine states have no income tax at all: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. If you live in one of those, your take-home calculation is simpler.

High-tax states significantly change the math. California (top rate 13.3%), New York (up to 10.9%), Oregon (9.9%), and Minnesota (9.85%) can each add several thousand dollars to your annual bill. The calculator uses 2026 single-filer brackets for all 50 states and DC — but excludes state standard deductions and local taxes (NYC adds up to 3.876% on top of NY state). Actual state liability at filing is typically somewhat lower.

Set aside for quarterly taxes

Side hustlers don't have withholding. You owe the IRS four times a year — April 15, June 15, September 15, and January 15. A practical rule: set aside 25–30% of every net profit dollar into a separate savings account. Pay quarterly to avoid the underpayment penalty, which the IRS charges even if you pay in full by April 15.

Use our Self-Employment Tax Calculator for the detailed SE tax breakdown, or the Gig Earnings Calculator if you're focused on a single platform with platform fee and hourly rate analysis.

These are estimates, not tax advice. State income tax estimates are for single filers and do not include state standard deductions, personal exemptions, local taxes, or filing-status adjustments. If your situation is complex — multiple income streams, an S-Corp election, or significant investment income — consult a CPA.

Where these numbers come from

Every income stream is combined into one Schedule C-style net profit, then the calculator applies self-employment tax, 2026 federal brackets, and your state's brackets. The constants come from these sources:

Constants last verified against these sources on June 10, 2026. Every value is also pinned by an automated test suite that fails if a rate in the calculator drifts from the figure we transcribed from the source.

Frequently asked questions

How does the side hustle calculator work?
Enter each income stream separately — Etsy, freelance clients, DoorDash, whatever you run. For each hustle you enter your monthly gross income (or hourly rate), monthly business expenses, and monthly business miles driven. The calculator annualizes everything, then deducts expenses and the IRS standard mileage rate ($0.725/mile for 2026 per Notice 2026-10), computes self-employment tax (15.3% on 92.35% of net profit), and optionally estimates your state income tax using 2026 single-filer brackets.
Why can't I enter gas and miles at the same time?
The IRS requires you to pick one method: the standard mileage rate OR actual vehicle expenses (gas, oil, depreciation). The $0.725/mile standard rate already covers gas and maintenance, so deducting gas separately on top of it would be double-counting — and the IRS would disallow it on audit. Enter miles for the mileage deduction, and put non-vehicle expenses (software, supplies, platform fees) in the expenses field.
Does the calculator include federal income tax?
Yes. Pick your filing status and enter your other annual income (such as a day job), and the calculator estimates the federal income tax on your side-hustle profit using 2026 brackets and the standard deduction. It does this incrementally — the tax on your other income plus the profit, minus the tax on your other income alone — so your profit is taxed at the correct marginal bracket on top of what you already earn. Self-employment tax (15.3%) and the half-SE-tax deduction are handled too. It doesn't model itemized deductions, credits, or dependents, so treat it as a close estimate, not a filed return.
How accurate is the state tax estimate?
It's a directional estimate, not a precise filing number. The calculator applies 2026 single-filer brackets to your net profit minus half of your SE tax deduction. It does not model state standard deductions, personal exemptions, local income taxes (e.g. NYC adds up to 3.876%), or other state-specific rules. Treat it as a floor — your actual state tax at filing will likely be somewhat lower once your CPA applies all applicable deductions. States like California, New York, Oregon, and Minnesota are high; Florida, Texas, Nevada, and Washington have no state income tax.
Why does the calculator use $0.725/mile instead of $0.67?
The IRS raised the standard mileage rate to $0.725 per mile for 2026 (up 2.5 cents from $0.700 in 2025), per IRS Notice 2026-10. Some older calculators still show the outdated $0.67 rate from 2024. Using the wrong rate understates your deduction and overstates your tax bill.
I have multiple income streams — how do I add them all?
Click '+ Add another hustle' to add a panel for each income source. The calculator separately tracks gross income, expenses, and mileage per hustle, then combines everything for the SE tax and state tax calculation. SE tax is computed on your total net profit (not per hustle) because it's assessed on your combined Schedule C income at filing.
Do I need to pay quarterly taxes on side hustle income?
Yes, if you expect to owe more than $1,000 in federal taxes for the year after withholding from any W-2 job. The IRS expects quarterly estimated payments (Form 1040-ES) roughly on April 15, June 15, September 15, and January 15. A rough rule of thumb: set aside 25–30% of every net profit dollar for federal taxes, plus your state rate, and make quarterly payments.

Side hustle tax calculator by state

State income tax can swing your take-home by thousands. Pick your state for a version with 2026 state brackets built in.

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