How to Pay DC Taxes: Methods, Deadlines, and What Happens If You're Late
Where and How to Pay DC Taxes
The District of Columbia Department of Finance and Revenue (DOFR) accepts tax payments through four main channels: online through their website, by mail, in person at their office, or by phone. Each method has different deadlines and processing times, so the route you choose affects when your payment actually reaches the city.
Online payment through the DOFR website is the fastest and most direct route. You can pay income tax, property tax, or other DC taxes using a bank account (ACH transfer) or credit card. ACH transfers are free and typically post within one business day. Credit card payments charge a processing fee—usually around 2.5 percent—but process immediately, which matters if you are close to a deadline.
Mail payments should be sent to the address listed on your tax notice or the DOFR website, and you should mail them at least 10 business days before the deadline to account for postal delays. The postmark date, not the arrival date, is what counts as your payment date for most DC taxes, but DOFR must receive the payment within a reasonable time after the postmark date or they may reject it.
In-person payments at the DOFR office (1101 4th Street SW, Washington, DC) are processed the same day you pay. Phone payments are available for certain tax types; call the DOFR at 202-727-4829 to confirm whether your tax type can be paid by phone and what information you will need.
Key Takeaways
- Online ACH payments are free and post within one business day; credit card payments charge a fee but process immediately.
- Mail payments must be postmarked at least 10 business days before the deadline, and the postmark date—not arrival date—counts as your payment date.
- DC income tax is due April 15 each year (or the next business day if April 15 falls on a weekend or holiday); property tax is due in two installments, usually September 15 and March 15.
- Late payments accrue interest at 0.75 percent per month plus a failure-to-pay penalty, and the city can file a lien against your property or garnish your wages.
- If you cannot pay by the deadline, you can request an extension or a payment plan through DOFR before the due date.
DC Income Tax Deadlines and Due Dates
DC income tax returns and payments are due on April 15 each year, the same date as federal income tax. If April 15 falls on a Saturday, Sunday, or federal holiday, the deadline moves to the next business day. This deadline applies whether you file electronically or by mail.
If you file your return but do not pay the tax owed by April 15, interest and penalties begin accruing immediately. The city does not wait for a notice or a second deadline—the clock starts on April 16. This is why paying on time matters even if you file an extension for the return itself.
If you need more time to file, you can request an automatic extension, which gives you until October 15 to file your return. However, an extension to file is not an extension to pay. You still owe any tax due by April 15, even if you file the return later. The extension only delays when you must submit the paperwork; it does not delay when the money is due.
DC Property Tax Payment Schedules
DC property tax is split into two installments per year. The first installment is typically due September 15, and the second is due March 15. The exact due date can shift by one day if it falls on a weekend or holiday. Your property tax bill will show both due dates and the amount owed for each installment.
Property tax bills are mailed to the owner of record, usually in late August for the September installment and late February for the March installment. If you do not receive a bill, you are still responsible for paying on time. You can look up your property tax account online through the DOFR website using your property address or account number.
If you own rental property or a business in DC, you may also owe business personal property tax or rental housing tax, each with its own due date. Check your tax notices carefully to see all taxes owed and all due dates that apply to you.
What Happens When a Payment Is Late
DC charges interest on unpaid taxes at 0.75 percent per month (9 percent per year), calculated from the original due date. This interest compounds monthly, meaning you pay interest on the interest. A $1,000 tax bill unpaid for six months will owe roughly $45 in interest alone, on top of penalties.
In addition to interest, DC assesses a failure-to-pay penalty of 0.5 percent per month (up to 25 percent total) if you do not pay by the due date. This penalty is separate from interest and applies even if you have a valid reason for the delay. Together, interest and penalties can add 30 to 40 percent to your original tax bill within a year.
If your tax remains unpaid for several months, DOFR can file a tax lien against your property, which becomes a public record and damages your credit. The city can also garnish your wages, seize your bank account, or intercept your federal or state tax refund to cover the debt. These enforcement actions do not require a court order—DOFR can pursue them administratively.
If you receive a notice of tax assessment or a bill marked "past due," contact DOFR immediately. Waiting does not make the debt go away; it only increases what you owe.
Extensions and Payment Plans
If you cannot pay your DC tax by the due date, you can request an extension or a payment plan before the deadline passes. Requesting relief after the deadline has passed makes it harder to negotiate and does not stop interest and penalties from accruing.
An extension gives you additional time to pay the full amount owed, usually 30 to 90 days depending on the type of tax and your circumstances. You must request the extension in writing or through the DOFR website before the original due date. Interest and penalties continue to accrue during the extension period, so this option is best if you expect to have the money within a few months.
A payment plan allows you to pay your tax in installments over time, typically 3 to 12 months. DOFR will set up a schedule with you, and you make regular payments on the dates agreed. Interest and penalties still accrue, but a payment plan prevents wage garnishment and liens as long as you make each payment on time. If you miss a payment, the plan can be cancelled and enforcement actions may resume.
To request an extension or payment plan, contact DOFR by phone at 202-727-4829, visit their office in person, or check their website for an online request form. Have your tax account number and a clear picture of your financial situation ready when you call.
How ACH Transfers and Credit Card Payments Work
When you pay DC taxes online using ACH (Automated Clearing House), you are authorizing a direct transfer from your bank account to the city's account. ACH transfers are processed through the banking system and typically take one business day to complete. If you pay on a Friday, the transfer usually posts on Monday. DOFR considers the payment made on the day you submit it online, not the day it posts to their account, so paying Friday for a Monday deadline is safe.
Credit card payments process immediately when you submit them, but a processing fee (usually 2 to 2.5 percent) is added to your bill. This fee goes to the payment processor, not to DOFR, so it is an extra cost you bear. For large tax bills, this fee can be significant. For example, a $5,000 tax payment by credit card could cost $125 in fees. Use credit card payment only if you need the payment to post immediately or if you are earning rewards that offset the fee.
Both ACH and credit card payments require you to enter your tax account number or Social Security number so DOFR can match the payment to your account. If you enter the wrong number, the payment may post to a suspense account and not be credited to your bill for several weeks. Double-check all numbers before you submit.
Estimated Tax Payments and Quarterly Deadlines
If you are self-employed or have income that is not subject to withholding, DC requires you to make estimated tax payments four times per year. These payments are due on April 15, June 15, September 15, and January 15 of the following year. Each payment covers roughly one quarter of your expected annual tax liability.
Estimated payments are made using the same online system as regular tax payments. You can pay all four quarters at once or make each payment on its due date. If you underpay your estimated tax, you may owe a penalty when you file your annual return, even if you ultimately pay all the tax owed. DOFR calculates this penalty based on how much you should have paid each quarter versus what you actually paid.
If your income changes during the year, you can adjust your estimated payments for the remaining quarters. You do not have to pay the same amount each time. However, if you realize mid-year that you will owe more tax, it is better to increase your remaining quarterly payments than to wait and pay a large lump sum in April, because the penalty is based on underpayment during each quarter.
Frequently Asked Questions
What if I pay online but my payment does not show up on my account?
Online payments can take one business day to post. If you paid by ACH on a Friday, check your account on Monday. If more than two business days have passed and the payment still does not appear, contact DOFR with your confirmation number from the payment. Provide proof that you submitted the payment (a screenshot or email confirmation) and ask them to trace it.
Can I pay DC taxes with a debit card?
Most debit cards are processed as credit card transactions and will incur the same processing fee. Some payment processors accept debit cards at a lower fee than credit cards, but this varies. Check the DOFR website or call 202-727-4829 to confirm what card types are accepted and what fees apply before you pay.
What happens if I pay the wrong amount?
If you overpay, DOFR will credit the excess to your next tax bill or issue a refund if you request one. If you underpay, the unpaid balance accrues interest and penalties starting the day after the due date. Contact DOFR immediately if you realize you underpaid so you can pay the remainder before more penalties accrue.
Can I set up automatic payments for DC taxes?
DOFR does not offer automatic recurring payments through their website. You must make each payment manually. However, you can set up a calendar reminder for each due date and pay online each time. Some banks allow you to schedule bill payments to a government agency; check with your bank to see if they can send a payment to DOFR on your behalf.
Do I need to include a payment stub or letter with my mailed payment?
Yes. Include the payment stub from your tax bill or a letter with your name, address, tax account number, and the tax year you are paying for. Without this information, DOFR may not be able to match your payment to your account, and it could sit in a suspense account for weeks. Write this information clearly on a separate sheet and include it with your check.