Quarterly tax calculator for 1099 earners

Know what to pay before the deadline.

Estimate your 2026 federal and state payments using your income, write-offs, withholding, and IRS safe-harbor rules.

Next deadlineJanuary 15, 20272026 Q4 payment

Your details

Build your estimate

Tax filing statusState

Employment income (W-2)Freelance / business / 1099 income

Deductible business expensesInclude ordinary and necessary expenses you expect for the full year.

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Do you need to pay?

----

Waiting for your numbers

Federal payment

$----Enter your details to calculate

Alabama payments

$----Enter your details to calculate

Your payment plan

2026 installment schedule

Q1$----Apr 15, 2026

Q2$----Jun 15, 2026

Q3$----Sep 15, 2026

Q4$----Jan 15, 2027

Your installment schedule will appear after you calculate.

Penalty protection target

$---- for the year

Your penalty-protection target will appear here.

Waiting for estimate

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Total income: $----
Business write-offs: $----
Net 1099 profit: $----
Deductible half of SE tax: $----
Adjusted gross income: $----
Personal deduction: $----
Additional 2026 deductions: $----
QBI deduction: $----
Federal taxable income: $----
Federal income tax: $----
Self-employment tax: $----
Alabama income tax: $----
Federal withholding: $----
Additional Medicare withheld by employer: $----
State withholding: $----
Federal annual payment target: $----
State annual payment target: $----

Built for a useful planning estimate

More than income divided by four.

Safe-harbor logic

Compares 90% of 2026 tax with 100% or 110% of prior-year tax when supplied.

1099 tax details

Accounts for business expenses, the 92.35% SE tax base, the 2026 wage cap, and QBI.

State-aware payments

Uses 2026 state rate structures, filing thresholds, and California's uneven schedule.

Important:

This is a planning estimate based on the information you enter. It does not prepare Form 1040-ES or Form 2210 and does not cover every credit, local tax, multi-state allocation, capital-gain rate, AMT, entity election, or annualized-income exception. For a filing position or penalty-sensitive decision, have a credentialed tax expert review your facts.

2026 planning calculator. Sources include IRS Form 1040-ES and published state tax rules.