When you work as a real estate agent, you’re typically an independent contractor receiving 1099 income from your brokerage. Nobody withholds taxes from your commission checks. That means you’re responsible for paying both income tax and self-employment tax directly to the government throughout the year instead of waiting until April.

The IRS expects you to pay taxes as you earn income, not all at once. Quarterly estimated payments are how self-employed people meet this requirement. You’re essentially doing what an employer would do for a W-2 employee, just for yourself.

Payment due dates are April 15, June 15, September 15, and January 15 of the following year. These cover income earned during the previous quarter. Miss a payment or pay late and you’ll face penalties and interest, even if you pay everything you owe by the April filing deadline.

For federal taxes, use Form 1040-ES to calculate and submit payments. You can pay online through IRS Direct Pay, the EFTPS system, or by mailing a check with a payment voucher. California has its own estimated tax requirement paid through the Franchise Tax Board. You’ll need to make separate payments to both.

Calculating your estimated payments involves projecting your annual income and tax liability, then dividing by four. The IRS provides a safe harbor rule: if you pay at least 100% of last year’s total tax liability spread across four payments, you avoid underpayment penalties even if you owe more this year. For higher earners with adjusted gross income over $150,000, that threshold is 110% of last year’s tax.

The challenge for real estate agents is that commission income varies wildly. You might close three deals one quarter and nothing the next. Some agents base their estimates on prior year income. Others calculate based on actual income earned each quarter and adjust payments accordingly. Both approaches work as long as you meet the safe harbor thresholds.

Self-employment tax adds another 15.3% on top of your income tax for Social Security and Medicare. Many agents underestimate this and end up owing thousands at tax time. Factor it into your estimates from the start.

A practical approach is setting aside 25-30% of every commission check in a separate savings account dedicated to taxes. When quarterly payments come due, the money is already there. Agents who spend first and try to scrape together tax payments later often fall behind and face penalties.

If your income is genuinely unpredictable, working with a LA County bookkeeper for small businesses can help you stay on top of quarterly obligations. Someone tracking your income monthly can flag when you need to adjust payments up or down before penalties accumulate.

Ignoring quarterly payments doesn’t make the taxes go away. It just means you’ll owe a larger lump sum in April plus penalties for underpayment. Consistent quarterly payments keep you current with the IRS and California, and prevent the financial shock of a massive tax bill when you file your return.