Frequently Asked Questions

If you expect to owe $1,000 or more in tax after subtracting withholding and credits, the IRS expects you to pay estimated taxes. This commonly applies to freelancers, independent contractors, sole proprietors, and anyone with significant income that doesn't have taxes withheld at the source.

For tax year 2026, the quarterly due dates are: Q1 on April 15, 2026 (for income earned Jan-Mar), Q2 on June 16, 2026 (Apr-May), Q3 on September 15, 2026 (Jun-Aug), and Q4 on January 15, 2027 (Sep-Dec). Note that Q2 only covers two months of income.

Self-employment tax covers Social Security (12.4%) and Medicare (2.9%) for people who work for themselves. It's calculated on 92.35% of your net self-employment income. The Social Security portion is capped at $168,600 for 2026. You can deduct 50% of your SE tax when calculating your adjusted gross income.

The safe harbor rule protects you from underpayment penalties. If your AGI is under $150,000, you meet safe harbor by paying at least 100% of your prior year's total tax liability. If your AGI is $150,000 or more, you need to pay at least 110% of last year's tax. Meeting safe harbor means you won't face penalties even if you owe additional tax when you file.

The IRS charges an underpayment penalty, calculated as interest on the unpaid amount for each day it's late. The penalty rate is the federal short-term rate plus 3 percentage points, compounded daily. The penalty applies to each quarter independently, so being late on one quarter doesn't affect others.

It depends on your state. Nine states (Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming) have no state income tax. All other states and DC require estimated payments if you expect to owe state income tax. Deadlines usually match federal dates but some states differ.

Yes. The IRS doesn't require equal quarterly payments. If your income is uneven, you can use the annualized income installment method (Form 2210, Schedule AI) to pay less in quarters with lower income. However, most freelancers find it simpler to estimate based on expected annual income and adjust if things change significantly.

Withholding is tax taken from your paycheck by an employer before you receive it. Estimated taxes are payments you make directly to the IRS (and your state) because no employer is withholding for you. If you have both W-2 and 1099 income, your W-2 withholding counts toward your total tax obligation, reducing what you need to pay in estimated installments.

No. TaxCadence provides estimates based on standard federal and state tax rates. It does not account for all possible deductions, credits, or special circumstances. Always consult a qualified tax professional for advice specific to your situation. The calculations here are for planning purposes only.

TaxCadence uses current 2026 federal tax brackets, standard deductions, and state tax rates. For straightforward freelance income scenarios, the estimates are very close to what you'd calculate using IRS Form 1040-ES. However, if you have complex situations (multiple businesses, rental income, capital gains, foreign income), the estimate may differ from your actual tax liability.