Send federal tax payments to the IRS service center for your region

The IRS divides the country into regional service centers. Which one you use depends on your state and the type of tax you're paying. The address changes based on whether you're sending a check, money order, or Form 1040-ES (estimated tax payment voucher).

Do not send tax payments to the IRS office in your city or to a local tax preparation business. Regional service centers are the only correct destination. Sending to the wrong address delays processing and can create confusion about whether your payment arrived.

The IRS publishes the complete list of service center addresses on its website under "Where to File" for your tax year. You can also find the correct address on the back of your Form 1040-ES if you're making estimated payments, or in the instructions that came with your tax form.

Key Takeaways

  • Federal tax payments go to an IRS regional service center based on your state, not to a local IRS office or your tax preparer.
  • The correct mailing address depends on whether you're sending a check, money order, or estimated tax payment voucher, so check the IRS website or your tax form instructions before you mail.
  • Include your Social Security number or employer identification number on your check or money order so the IRS can match the payment to your account.
  • Mail payments at least one week before the deadline to account for postal delays, since the postmark date is what counts, not the arrival date.
  • State tax payments go to your state's department of revenue, not to the IRS, and each state publishes its own mailing address.

How to address your envelope for federal payments

Write your name, address, and Social Security number or EIN on the front of your check or money order. On the memo line, write the tax year and the form type—for example, "2024 Form 1040" or "2024 Form 1040-ES."

The envelope should be addressed to the service center for your state. The IRS website lists these by state and by payment type. For example, if you live in California and are mailing a check with your Form 1040, the address is different from the address for an estimated tax payment voucher.

Do not include a return address on the envelope itself, though you can write it on the check. The IRS does not return envelopes, and a return address can slow processing.

State tax payment addresses vary by state

Each state that collects income tax publishes its own mailing address for tax payments. These addresses are usually found on the state's department of revenue website or on the back of your state tax form.

Some states accept payments through their online portals instead of mail. Others allow you to pay through a third-party payment processor. Check your state's website first—mailing may not be the fastest route, and some states charge a fee for online payments that does not apply to mail.

If you cannot find your state's address, call the state department of revenue directly. The number is usually on your state tax form or on the state's official website.

Timing: when to mail so your payment arrives on time

The IRS counts the postmark date, not the arrival date. If your payment is postmarked by the deadline, it is considered on time even if it arrives weeks later. However, mail delays are unpredictable, so the IRS recommends mailing at least one week before the deadline.

If you are mailing close to the deadline and worried about delays, consider paying online instead. The IRS accepts payments through its website, through approved payment processors, and through your bank's bill-pay service. These methods are processed immediately and do not depend on postal timing.

State deadlines may differ from the federal deadline. Check your state's website to confirm the date your state payment must be postmarked.

What information must be on your check or money order

Write your full name and address on the check or money order. Write your Social Security number or EIN on the front. On the memo line, write the tax year and form type so the IRS can match the payment to the correct tax return.

Make the check or money order payable to "United States Treasury," not to the IRS. Do not use a personal check if you can avoid it—money orders are safer because they cannot bounce, and the IRS processes them faster.

If you are paying multiple years' taxes or multiple forms, send separate checks for each. Do not combine payments in a single check, because the IRS may not know how to split the money between your accounts.

What to do if you are unsure of the correct address

The IRS website publishes the complete list of service center addresses under "Where to File" for the current tax year. You can search by your state and payment type. This is the most reliable source.

You can also call the IRS at 1-800-829-1040 to confirm the correct address. Have your state and tax form type ready when you call. The wait time can be long during tax season, so calling early in the day or early in the week usually means a shorter hold.

If you have already mailed a payment to the wrong address, call the IRS immediately. They can sometimes intercept the payment or redirect it. The sooner you report the error, the better the chance of fixing it before the deadline passes.

Frequently Asked Questions

What if I mail my payment but it does not show up in my IRS account?

Wait at least four weeks after mailing before assuming the payment is lost. The IRS can take several weeks to process mailed payments. If four weeks have passed and the payment still does not appear, call the IRS at 1-800-829-1040 with your check number and the amount. They can search their records and tell you whether the payment was received.

Can I mail a payment to my local IRS office instead of the regional service center?

No. Local IRS offices do not process mailed payments. Sending to a local office delays your payment and may cause it to be misapplied to your account. Always use the regional service center address for your state.

Do I need to include a copy of my tax return with my mailed payment?

No. Send only the check or money order and the payment voucher if required. Do not include a copy of your return or any other documents. The IRS matches payments to accounts by Social Security number and tax year, not by paperwork.

What if my state does not have an income tax?

You only need to mail a federal payment to the IRS. States without income tax do not have a state payment address. Check your state's website to confirm whether your state collects income tax.

Is mailing a check safer than paying online?

Both are safe if done correctly. Mailed checks take longer to process and depend on postal timing. Online payments are processed immediately and leave a digital record. If you are close to the deadline, online payment is the safer choice because it does not depend on mail delivery.