How to Pay Estimated Taxes as a Small Business Owner

Estimated taxes catch a lot of owners off guard. Money comes in during the year, and the IRS usually wants its share during the year too.

That matters if you're a sole proprietor, LLC owner, partner, or S Corp shareholder. Once you know who pays, how to estimate the amount, and how to send it, the process gets a lot less stressful.

Who has to make estimated tax payments

Most individuals need estimated payments if they expect to owe at least $1,000 for the year after withholding and credits. The simple test is this: will too little tax be paid in before you file?

For pass-through businesses, the payment usually comes from the owner, not the business. An LLC needs extra attention because "LLC" is a legal label, not a federal tax label. The tax rule depends on how the LLC is taxed.

Sole proprietors and single-member LLCs

Sole proprietors and single-member LLCs usually report business profit on a personal return. If wages or other withholding won't cover the tax, they often make quarterly payments with Form 1040-ES.

Those payments usually cover income tax and self-employment tax. If you want a quick plain-English refresher, the SBA's quarterly taxes basics lays out the broad rule well.

Partnerships and S corporations

Partnerships and S corporations usually pass income through to the owners. The owners then pay tax on their share through personal returns.

That means the partnership or S Corp usually doesn't pay the owner's estimated income tax for them. One exception exists for certain S Corp corporate-level taxes. If those taxes reach $500 or more, the entity may need its own estimated payments.

How to figure out your estimated payment

This part is more math than mystery. Estimate yearly income, subtract business expenses, figure the tax, then divide it into four payments. Form 1040-ES is the worksheet many owners use.

Use our free estimated tax tool here.

Estimate business profit and other income

Start with expected business income for the year. Then subtract ordinary business expenses, such as rent, software, supplies, mileage, and contractor costs.

Next, look beyond the business. Wages, interest, dividends, and a spouse's income on a joint return can all change the final tax number.

Include self-employment tax when it applies

If you're a sole proprietor or single-member LLC taxed that way, self-employment tax is easy to miss. That's why we created this free tool for you to use. You can estimate income tax pretty well and still come up short because Social Security and Medicare taxes sit on top of it.

S corp shareholders usually don't pay self-employment tax on pass-through profit in the same way, though wages paid by the S corp are subject to payroll tax. Partners can be more complicated, since some partnership income may be subject to self-employment tax.

Use last year's return to avoid underpaying

If you don't know your current revenue, last year's return is often the best starting point. Check your total tax, compare it to this year's expected income, then adjust for new deductions, new withholding, or a big jump in profit.

A safe harbor can also help you avoid penalties. Many taxpayers are protected if they pay at least 90% of this year's tax, or 100% of last year's tax. Some higher-income filers need 110% of last year's tax.

The easiest ways to pay the IRS

Once you've figured out the number, payment is the easy part. The key is picking a method you'll actually use on time, every quarter.

Pay online through IRS Direct Pay or your IRS account

For most owners, online payment is the cleanest option. You can pay from a bank account, submit a same-day payment, and keep the confirmation number for your records. Click here to pay using the IRS direct payment tool.

This works well if you pay one quarter at a time. Just make sure you choose the right tax year and the right payment type before you hit submit.

Use EFTPS if you want a business-style system

EFTPS works well for owners who like to schedule ahead. It's handy if you want to line up all four payments early and stop thinking about them.

The downside is setup time. Don't wait until the due date to open the account and expect everything to work instantly.

Mail a payment with Form 1040-ES if needed

Mail is still an option. It's slower, but it works if you prefer paper or can't use an online method in time.

Use the correct 1040-ES voucher, follow the check instructions, and mail it early enough to arrive by the deadline. If you also pay state estimates, remember that state rules may differ.

Estimated tax due dates you should not miss in 2026

For calendar-year taxpayers, the standard 2026 due dates are easy to save. Missing one can trigger an underpayment penalty, even if you pay the rest when you file.

April 15, 2026

This is the first estimated payment for the 2026 tax year. For many owners, it arrives fast.

June 15, 2026

This second payment keeps you current as the year moves along. Paying here helps prevent small gaps from growing.

September 15, 2026, and January 15, 2027

These are the final two deadlines for most calendar-year filers. January 15, 2027 covers the last estimated payment for 2026, unless the date moves because of a weekend or holiday.

Keep the process simple

Estimated taxes are manageable once you know who owes them. Match the rule to your business type, make a reasonable estimate, and pay each quarter instead of waiting for April.

Keep Form 1040-ES, your confirmations, and your payment dates in one place. Good records now make filing season much easier. If your a client of ours and want to upload your estimated tax payment into your portal you may do so by clicking here.