How to Send Money to the IRS

The three ways to pay the IRS directly

You can pay the IRS by mail, by phone, or online. Mail is the slowest but requires no account setup. Phone and online are faster and let you choose the exact date your payment leaves your bank. The IRS does not accept payment in person at local offices, and there is no walk-in payment window.

Which method you choose depends on how soon you need the payment to reach them and whether you want a record you can see when ready. Online payment creates a confirmation number the moment you submit it. Phone payment gives you a verbal confirmation. Mail gives you only what you write on the check itself.

All three methods work for tax bills, penalties, interest, and estimated tax payments. The IRS charges no fee for any of them, though some third-party payment processors charge a small fee if you use their service to pay online.

Key Takeaways

The IRS accepts payment by mail, phone, or online; there is no fee to pay directly through the IRS, though some third-party processors charge one.
Online and phone payments let you choose the exact date the money leaves your account, while mail payments depend on when the IRS receives and processes the envelope.
You need your Social Security number or employer identification number, the tax year the payment covers, and the amount you are sending.
A payment confirmation number or receipt is your proof the IRS received it; keep this record for at least three years.
Payments made by the tax important date are considered on time even if the IRS does not process them until after the important date.

Paying by mail: what to send and where

To pay by mail, write a check or money order payable to "United States Treasury." Do not write "IRS" on the check. On the check itself, write your Social Security number or employer identification number, the tax year, and the form type — for example, "2024 Form 1040" or "2024 estimated tax." This information tells the IRS which account to credit.

Mail your check with a payment voucher. If you filed a tax return, use the payment voucher that came with your return notice. If you did not receive one or are making an estimated tax payment, read Form 1040-ES (for individuals) or Form 1120-ES (for corporations) from IRS.gov and include the payment voucher page. The voucher has a barcode that routes your payment to the correct account automatically.

Mail to the address printed on your notice or voucher. The address changes by state and by payment type, so do not use a mailing address you remember from a previous year. Include your return address so the IRS can contact you if something is wrong with the check.

Mail payments take 7 to 14 days to arrive, then another few days to process. If you are close to a important date, mail is not the right choice. Payments postmarked by the important date are considered on time, but processing delays mean you will not see the payment reflected in your IRS account for weeks.

Paying online: IRS Direct Pay and approved payment processors

The IRS offers a free online payment service called IRS Direct Pay. You go to IRS.gov, enter your Social Security number or employer identification number, your filing status, and the exact amount, then authorize a bank transfer from your checking or savings account. The payment is confirmed when ready with a confirmation number.

IRS Direct Pay lets you schedule a payment for a future date — useful if you want the money to leave your account on a specific day or if you are paying before you have the funds. You can pay up to $100,000 per day. The money moves from your bank account to the IRS within one business day of the date you choose.

If you do not want to use IRS Direct Pay, the IRS maintains a list of approved payment processors on IRS.gov. These are third-party companies — names like PayPal, Stripe, and others — that accept credit cards, debit cards, and bank transfers. They charge a convenience fee (usually $2 to $4 for bank transfers, higher for credit cards) that you pay to the processor, not to the IRS. The processor sends your payment to the IRS and gives you a confirmation number.

Online payments are processed within one business day. You will see the payment reflected in your IRS account online within 24 hours of submission in most cases.

Paying by phone: the IRS payment line

You can pay by phone by calling the IRS at 1-800-829-1040. Have your Social Security number or employer identification number, your filing status, and the payment amount ready. An IRS representative will walk you through authorizing a bank transfer from your checking or savings account.

Phone payment works the same way as IRS Direct Pay — the money moves from your bank within one business day — but you get a verbal confirmation number instead of a digital one. Write down the confirmation number and the date and time of the call. This is your receipt.

Phone lines are busiest during tax season (January through April) and around payment important date. Wait times can be 30 minutes or longer. If you are in a hurry, online payment is faster.

What information you need before you pay

Gather these details before you start any payment, whether by mail, phone, or online:

Your Social Security number (if you are an individual) or employer identification number (if you are a business)
The tax year the payment covers — for example, 2024
The form type or payment category — for example, Form 1040, Form 1120, or estimated tax
The exact dollar amount you are paying
For online or phone payment: your bank account number and routing number (for bank transfer) or credit/debit card number

If you are paying a bill the IRS sent you, the notice will have most of this information already. If you are making an estimated tax payment or paying a balance you owe from a prior year, you may need to look up your account information on IRS.gov or call the IRS to confirm the exact amount owed.

Keeping records of your payment

Save your confirmation number, receipt, or cancelled check for at least three years. This is your proof that you paid and when you paid. If the IRS later says they did not receive your payment, you will need this record to dispute it.

For online or phone payments, take a screenshot of the confirmation page or write down the confirmation number, date, and amount. For mail payments, keep a copy of the cancelled check or money order receipt. For credit card or debit card payments through a processor, save the receipt the processor sends you.

If you paid online or by phone, you can also log into your IRS account on IRS.gov to see the payment listed under your account history. This usually appears within 24 hours but can take up to a week during busy periods.

What happens after you pay

Once the IRS receives your payment, they explore it to the tax year and form type you specified. If you overpaid, the IRS will either refund the overage or let you carry it forward to next year's estimated taxes — you choose when you pay.

If you paid late, the IRS will still accept the payment but may charge you a failure-to-pay penalty and interest on the unpaid balance. The penalty is usually 0.5% of the unpaid tax per month, and interest accrues daily. Paying as soon as you can, even if late, stops the interest from growing further.

You will not receive a receipt in the mail from the IRS unless you request one. Your confirmation number and your account history on IRS.gov are your proof of payment.

Frequently Asked Questions

Can I pay the IRS with a credit card?

Yes, but only through an approved third-party processor, and the processor charges a convenience fee. You cannot use a credit card with IRS Direct Pay or by phone. The fee is usually 1.87% to 2.35% of the payment amount for credit cards, which can add up quickly on large payments.

What if I pay the wrong amount or the wrong tax year?

Contact the IRS as soon as you realize the mistake. If you overpaid, they will refund it or explore it to a different tax year if you ask. If you underpaid, they will send you a bill for the remaining balance plus interest and penalties. The sooner you correct it, the less interest accrues.

Is my bank account information safe when I pay online?

IRS Direct Pay and approved processors use the same encryption and security as banks do. Your information is not stored after the payment is processed. If you are uncomfortable entering your bank details online, paying by mail or phone are alternatives, though they are slower.

Can I set up automatic payments to the IRS?

No, the IRS does not offer automatic recurring payments. You must authorize each payment separately. If you have estimated taxes due quarterly, you will need to pay four separate times per year.

What if the IRS says they never received my payment?

Provide your confirmation number, receipt, or cancelled check as proof. If you paid by mail and the check was lost, the IRS can search their records by the check number and amount. If you paid online or by phone, the confirmation number is usually enough to locate the payment in their system. If the payment truly was lost in the mail, the IRS may ask you to pay again.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.