How to pay back taxes to the IRS, method by method

Before you pay: confirm the balance and the tax year

Knowing how to pay back taxes starts with knowing exactly what you are paying. A payment credited to the wrong year can leave the right year unpaid, still collecting penalties and interest, while the other year shows a credit you did not intend.

Pull three details from the notice or from your IRS online account: the tax year, the tax form (1040 for most individuals) and the notice number. If you have not confirmed the total yet, start with how to check if you owe back taxes.

How to pay back taxes to the IRS online for free

Two free methods pull money straight from a checking or savings account. Neither charges a fee, and both give you a confirmation you can save.

IRS Direct Pay

Direct Pay needs no account or sign-in. You verify your identity on the site, choose balance due as the reason, pick the form and tax year, and enter your bank routing and account numbers. You can make up to 5 payments a day, and you can change or cancel a scheduled payment up to two business days before its date.

Direct Pay has one gap worth knowing: people who have never filed, or have not filed in more than six years, cannot use it and must pay another way. A step-by-step walkthrough is in our IRS Direct Pay guide.

Your IRS Individual Online Account

The IRS lists the online account as its preferred method. You sign in once through the IRS identity check, see your balance by tax year and pay against it directly, which cuts the risk of picking the wrong year. You can save bank details, schedule payments up to 365 days ahead, make up to 20 payments a day and see up to five years of payment history.

Card and digital wallet payments

The IRS does not process card payments itself. Two private processors, Pay1040 and ACI Payments, Inc., take the payment and pass it to the Treasury. Their fees are theirs; none of it goes to the IRS.

On a $4,000 balance, a credit card payment costs $70 through Pay1040 or $74 through ACI, before any interest your card company charges. A debit card costs about $2 whatever the amount, which makes it a reasonable choice if you cannot use Direct Pay. The IRS also caps how many card payments you can make, with limits that depend on the tax type and payment type.

Paying by check, money order or cash

Paper payments are still accepted. Under Executive Order 14247 the IRS began phasing out paper refund checks on September 30, 2025, but the IRS says a requirement to pay only electronically is not expected before 2027, and no start date has been set. Our page on the IRS electronic payment requirement tracks any changes.

How to fill out a check to the IRS

1. Make the check, money order or cashier's check payable to U.S. Treasury, never to a person or a company.
2. On the front, write your name, address, daytime phone number, Social Security number (or ITIN), the tax year and the form or notice number, for example 2024 Form 1040 CP14.
3. If you are paying a joint balance where the IRS assessed each spouse separately, write MFT 31 separate assessment on the memo line.
4. Send it to the address printed on your notice. If there is no notice, use the IRS table of payment addresses for your situation.
5. Do not staple or clip the payment to the voucher or return, and use regular mail with Form 1040-V; private delivery services can slow processing.

Paying with cash

Participating retail stores accept cash for IRS payments up to $500 per payment, for a fee of up to $1.50, and the IRS asks you to pay at least 7 days before the due date. You can also pay cash with no limit at an IRS Taxpayer Assistance Center by appointment, or turn cash into a money order and mail it. Never mail cash itself.

How to pay back taxes in payments instead

If you cannot cover the whole amount, you can still pay part today and arrange the rest. For balances under $100,000 that you can clear in 180 days, a short-term plan has no setup fee. For monthly payments, individuals who owe $50,000 or less can apply for an installment agreement online, where the setup fee is $29 with direct debit or $69 with other payment methods.

Direct debit plans are the lowest-cost long-term option and make a missed payment less likely; a default can lead to a CP523 notice of intent to end the plan. The full set of setup routes is in how to set up an IRS payment plan, and the trade-offs between plans and relief options are in our back taxes guide.

After you pay back tax you owe: confirm it posted

Save the confirmation number from any electronic payment. After a few days, sign in to your online account and check that the payment shows under the correct year. For a check, your bank statement shows when it cleared.

If a notice arrives after you paid, compare the payment date with the notice date. Notices are prepared in advance, so one printed before your payment posted can cross in the mail. If the payment is missing weeks later, reply to the notice with a copy of your confirmation or cancelled check.

A full payment also sets other things in motion. The IRS releases a filed tax lien within 30 days after the debt is paid, and a passport certification is reversed within 30 days of the debt being resolved.