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Why Quarterly Taxes Matter for Freelancers

If you're self-employed, the IRS expects you to pay taxes throughout the year — not just in April. The U.S. tax system is "pay as you go," which means when you earn income without an employer withholding taxes, it's your job to remit them quarterly.

Failing to pay estimated taxes on time can trigger a penalty from the IRS, even if you ultimately owe nothing at the end of the year. The good news is that quarterly taxes are manageable once you understand the system.

The Four Deadlines You Can't Ignore

The IRS collects estimated taxes four times a year. For most freelancers, the approximate due dates are:

Mark these in your calendar today. Missing them by even a single day starts the penalty clock.

How to Calculate What You Owe

The simplest safe harbor rule: pay at least **90% of the current year's tax liability** or **100% of last year's total tax** (110% if your income was over $150,000). If you meet either threshold, you avoid underpayment penalties regardless of how much more you owe in April.

Here's a straightforward approach: - Take your net self-employment income for the quarter - Multiply by approximately 25–30% (to cover both income tax and the 15.3% self-employment tax) - Pay that amount to the IRS using Form 1040-ES

Tools That Make This Easier

Tracking income and expenses carefully throughout the year is the single most powerful thing you can do to simplify quarterly taxes. When your books are current, you always know your net profit and can calculate your tax payment in minutes.

A-book was designed exactly for this: as you log income and expenses, you get a running view of your net profit, so estimating your quarterly payment is never a guessing game.

Don't Forget State Taxes

Most states with income tax also require quarterly estimated payments. Rules vary — some states follow the federal schedule, others have their own deadlines. Check your state's department of revenue website or consult a local tax professional if you're unsure.

Staying ahead of quarterly taxes isn't just about avoiding penalties — it's about building financial habits that make running your business less stressful. When taxes aren't a surprise, you can focus on growing your income instead of scrambling to find money each April.