Q4 2026 estimated taxes are due January 15, 2027. Work out your payment →
Quarterbird

About Quarterbird

Taxes shouldn't be the hardest part of working for yourself.

Millions of Americans work for themselves, and most get paid in ways tax software was never designed for: Venmo, Cash App, PayPal, a client's ACH. Quarterbird exists to make the money side of that work calm, clear and on time.

Our mission

Help every independent worker know exactly what they can spend, what they owe, and when it's due, without a finance degree, a bank login or an expensive subscription.

We started with the question freelancers ask most and get answered least: “How much of this payment is actually mine?” Everything in Quarterbird is built around answering it, every time money comes in.

What we believe

Clarity over cleverness

One number to save, one date to pay, one amount to send. If a screen needs a tutorial, we redesign the screen.

Your money, your data

We never ask for your bank password, we don't sell data, and your records stay on your phone. Exports are free, always.

Honest by default

No surprise charges, no dark patterns, no price hikes on people who already trust us. Our billing promises are public and built into the app.

Show our working

Every estimate is explained: the brackets, the rates, the deductions. We cite the IRS and update our tables every year before January.

How we work

  • Sourced numbers. Tax brackets, wage bases and mileage rates come from IRS and SSA publications, and the tax engine is checked by automated tests.
  • Yearly refresh. New tables ship before each January so your first payment of the year is already right.
  • Privacy by design. Your records live on your device. Even accountant links carry the numbers inside the link, never on our servers.
  • Published policies. Our billing promises and security practices are published, not buried.

What we don't do

  • ✕File tax returns or act as your tax preparer
  • ✕Give personalized tax advice
  • ✕Sell or share your financial data
  • ✕Require a bank login

Our promises to you

  • ✓A reminder before you pay
  • ✓One-tap cancel
  • ✓Your price is locked
  • ✓Your data is yours
  • ✓No bank login required

Talk to us

Questions, feedback, partnerships or press: we read every message.