Quarterly Taxes for 1099 Workers: How Much to Set Aside Per Shift

If you’re paid through 1099 work, taxes don’t usually come out of each payment for you. That means you need a plan for estimating what you owe, and for keeping the money available when a quarterly payment is due.

A quarterly tax calculator for 1099 workers can help estimate your total tax and payment amounts. But you don’t have to wait until the end of a quarter to start saving. You can estimate a per-shift amount and build your tax reserve as you earn.

Here’s a practical way to do both. The examples are illustrative, not a prediction of your tax bill.

Start with 25–30% of net profit, not gross pay

A common starting point is to set aside 25–30% of your net 1099 profit for federal income tax and self-employment tax. Your state may also have income tax, so you may need to adjust that range.

“Net profit” is generally your business income minus eligible business expenses. It isn’t always the same as the amount you take home after every cost.

For example, a driver may receive $260 for a shift and have $35 in eligible business expenses:

That gives the driver a working range of about $56–$68 for this shift.

Keep your records for expenses, and only count expenses that qualify as business expenses. Personal costs aren’t automatically deductible, and rules can depend on how you work. If you’re unsure, check with a tax professional.

Walk through a quarterly tax estimate

A percentage is a useful starting point. A quarterly estimate takes a wider view: your expected income for the year, deductions, filing situation, credits, other income, and any tax already withheld.

Use this simple sequence when you work through a calculator or Form 1040-ES:

1. Estimate your full-year income. Include your expected 1099 income and other income, such as W-2 wages.
2. Subtract eligible business expenses. Estimate your net profit, and keep records to support your figures.
3. Estimate your total tax. Include self-employment tax and income tax. Your state tax may need a separate estimate.
4. Account for withholding, credits, and payments already made. These can reduce the amount you still need to pay.
5. Compare the result with the safe harbor. That can help you check whether your payments are on track to avoid an underpayment penalty.

The IRS’s 2026 Form 1040-ES provides worksheets for estimating federal tax and payment amounts. It’s more than a percentage-of-income calculator, so gather your records before you start.

An example of turning the estimate into a per-shift amount

Say a worker’s estimated 2026 tax is $15,000 after considering their full tax picture, and they have no withholding or estimated payments to subtract. If they expect to make four equal estimated payments, that works out to $3,750 per installment.

Now suppose they expect to work 65 shifts during the quarter. To build $3,750 by the payment date:

$3,750 ÷ 65 shifts = about $57.69 per shift

That’s about 25.6% of the $225 net profit in our earlier example. It sits within the 25–30% starting range.

This is an illustration of how to spread a quarterly target across shifts, not a calculation of what any particular worker owes. Your estimated tax may be higher or lower.

What the safe harbor rule means

The safe harbor is a way to estimate whether you’ve paid enough during the year to generally avoid an underpayment penalty. In broad terms, your withholding and timely estimated payments need to cover the smaller of:

• 90% of your tax for the current year, or
• 100% of your tax for the prior year.

If your prior-year adjusted gross income was over $150,000, or over $75,000 if you’re married filing separately, the prior-year figure is generally 110% instead of 100%. The prior-year return must cover a full 12 months.

These percentages apply to your tax situation as a whole; they aren’t a set-aside rate to apply to every shift. The amount you owe when you file can still differ from what you’ve paid during the year. The IRS estimated tax guidance explains the rules and exceptions.

Calculate once a quarter, or reserve something from every shift?

Both approaches can work. They solve different parts of the problem.

A quarterly calculation is a useful checkpoint. But if income gets spent before that checkpoint, the math alone won’t put the money back. A per-shift reserve turns a large quarterly target into smaller amounts you can track as you go.

For instance, reserving about $58 from each of 65 shifts would build roughly $3,770. That’s close to the illustrative $3,750 target above. If your shifts or earnings change, revisit the amount rather than assuming the same reserve still fits.

Don’t miss the Q4 estimated payment

For calendar-year filers, the Q4 2026 estimated tax payment is due January 15, 2027. See the IRS estimated tax payment guidance for current payment instructions and exceptions.

If your income rises or drops during the year, your estimate may need to change. The IRS also allows an annualized-income method for some people with uneven earnings. That method can affect how much is due in each installment, so get tax advice if you need help applying it.

Make the per-shift habit easier to keep

You don’t need a perfect forecast before you begin. Start with a reasonable percentage, record what you earned and your eligible expenses, then review the estimate regularly.

A simple routine:

• Log the shift and your income.
• Record relevant business expenses.
• Calculate a reserve from your net profit.
• Keep that reserve separate from money you plan to spend.
• Recheck your full-year estimate before each payment date.

Night Shift’s Tax Reserve feature tracks a set-aside from each shift and shows your reserve as it builds. It can help you keep a running record, but it doesn’t file your tax return or send estimated payments to the IRS. You remain responsible for reviewing your estimate and making payments.

Frequently asked questions

Is 25–30% enough for every 1099 worker?

No. It’s a starting estimate, not a guarantee. Your total income, filing status, expenses, state, credits, and any W-2 withholding can change the amount you need to reserve.

Do I calculate the percentage on gross income or net profit?

For a self-employed worker, a useful starting point is net profit: business income minus eligible business expenses. Keep separate records for gross payments and expenses so you can check your figures.

Do I have to pay estimated taxes?

The IRS generally requires estimated payments when you expect to owe at least $1,000 after withholding and refundable credits, and your withholding and credits don’t meet the applicable payment threshold. The details depend on your tax situation; consult the IRS instructions or a tax professional.

Can a calculator tell me exactly what I owe?

A calculator can estimate from the information you provide. It can’t guarantee your final bill, especially if your income changes or you have other income, deductions, credits, or state tax obligations.