When Tax Payments Are Due and What Happens If You Miss Them
Tax payment deadlines depend on the type of tax and who collects it
Federal income tax, state income tax, property tax, and sales tax each have their own due dates — and missing one carries different consequences. Federal income tax is due April 15 each year for most people, though that date can shift if it falls on a weekend or holiday. State income tax deadlines usually match the federal date, but some states have different schedules. Property tax deadlines vary by county and can fall anywhere from September through June, depending on where you live. Sales tax is collected by businesses at the point of sale and remitted on schedules that range from monthly to quarterly, depending on the state and the business's size.
The key is that you need to know which taxes apply to you and where to find their specific dates. A property owner in one county pays on a different schedule than a property owner fifty miles away. A self-employed person has different deadlines than a W-2 employee. A business collecting sales tax has deadlines that depend on its state and revenue level. This section explains where to find your actual dates and what each deadline means.
Key Takeaways
- Federal income tax is due April 15 each year; state income tax usually follows the same date, but check your state's website to confirm.
- Property tax deadlines are set by your county or municipality and can fall in any month — check your tax bill or your assessor's office website for the exact date.
- Missing a tax deadline triggers penalties and interest that compound over time, even if you cannot pay the full amount owed.
- If you cannot pay by the deadline, you can request an extension, set up a payment plan, or ask about hardship relief — but you must act before or on the due date, not after.
- Estimated tax payments are due four times a year if you are self-employed or have income not subject to withholding.
Federal income tax: April 15 and quarterly estimated payments
Federal income tax for the previous calendar year is due April 15. If you are a W-2 employee and your employer withholds taxes from your paycheck, you may owe nothing, receive a refund, or owe a small amount. If you are self-employed, a freelancer, or have investment income, you likely owe estimated tax payments four times a year: April 15, June 15, September 15, and January 15 of the following year.
The IRS allows you to request a six-month extension, which moves your deadline to October 15, but an extension to file is not an extension to pay. If you owe money, interest and penalties begin accruing on April 16 if you have not paid by then — even if you have filed for an extension. You can file your return late, but you cannot pay late without consequences.
You file federal taxes with the Internal Revenue Service (IRS). You can find the exact deadline and any holiday shifts on IRS.gov. If April 15 falls on a Saturday, Sunday, or federal holiday, the deadline moves to the next business day.
State income tax: Usually April 15, but verify your state
Most states that collect income tax use April 15 as their deadline, matching the federal date. However, some states have different schedules. For example, some states allow you to file by the federal deadline even if their own deadline is earlier, while others have moved to different dates entirely. A few states do not collect income tax at all.
The safest approach is to check your state's department of revenue website directly. Search "[your state] income tax deadline" or visit your state's tax agency page. Your state tax bill or notice will also show the deadline. If you live in one state but work in another, you may owe taxes to both — each has its own deadline and rules.
Like federal taxes, state penalties and interest begin accruing the day after the deadline if you have not paid. An extension to file does not stop the clock on what you owe.
Property tax: Varies by county, often with multiple payment dates
Property tax deadlines are set by your county assessor or tax collector's office, not by the state or federal government. This means the due date depends entirely on where your property is located. Some counties have one deadline per year; others split the year into two or four payment periods. A property owner in one county might pay in December, while a property owner in a neighboring county pays in April.
Your property tax bill will show the due date clearly. If you do not receive a bill, contact your county assessor's office or tax collector's office — they can tell you the deadline and what you owe. Many counties post payment schedules and deadlines on their websites. You can also search "[your county] property tax deadline" to find the official schedule.
Property tax penalties are often steep — typically 10 to 20 percent of the unpaid amount, plus interest that compounds monthly. If you do not pay by the deadline, your county can place a lien on your property, meaning they have a legal claim against it. If the debt goes unpaid long enough, the county can foreclose and sell the property to recover what you owe.
Sales tax: Collected at purchase, remitted by businesses on set schedules
If you are a consumer, you pay sales tax at the point of sale — it is added to your purchase and collected by the business. You do not file a separate sales tax return. If you own a business that collects sales tax, you must remit it to your state on a schedule set by your state's tax agency. Most states require monthly remittance, though some allow quarterly or annual filing for very small businesses.
Your state's department of revenue will tell you your specific remittance schedule when you register your business. The deadline is usually the 15th or 20th of the month following the period you are reporting. Missing a sales tax payment deadline can result in penalties, interest, and in some cases, suspension of your business license.
What happens when you miss a tax deadline
Penalties and interest begin accruing the day after the deadline passes. The failure-to-pay penalty is typically 0.5 percent of the unpaid tax per month, up to 25 percent total. Interest is calculated daily and compounds, meaning you pay interest on the interest. The IRS publishes its interest rate quarterly; state rates vary. Together, penalties and interest can add 30 to 50 percent to your original debt over a few years.
For property tax, the penalty structure varies by county but is often more severe — 10 to 20 percent upfront, plus monthly interest. For income tax, the IRS can also assess a failure-to-file penalty if you do not file a return at all, which is separate from the failure-to-pay penalty. If you owe federal income tax and do not pay, the IRS can place a lien on your property, garnish your wages, or seize your bank account.
The longer you wait, the harder it becomes to catch up. A $2,000 debt can become $3,000 or more within two years if penalties and interest keep compounding. This is why acting before the deadline — even if you cannot pay in full — is critical.
Options if you cannot pay by the deadline
If you know you cannot pay in full by the deadline, you have several options, but you must act before or on the due date. Waiting until after the deadline to contact the tax agency does not stop penalties from accruing.
Request an extension to file. For federal income tax, you can file Form 4868 to request a six-month extension. This gives you until October 15 to file your return, but it does not extend your payment deadline — you still owe by April 15. However, filing the extension form shows good faith and can reduce some penalties if you pay what you owe by April 15.
Set up a payment plan. The IRS offers short-term payment plans (120 days or fewer) with no setup fee, and long-term installment agreements with a setup fee (typically $31 to $225, depending on how you pay). State tax agencies and county property tax offices also offer payment plans. You must contact them before the deadline to arrange one. Once approved, you make monthly payments on a schedule you can afford, and penalties may be reduced if you stay current on the plan.
Request a hardship deferral or relief. If you are facing genuine financial hardship — job loss, medical emergency, natural disaster — some tax agencies will temporarily delay collection efforts or reduce penalties. The IRS calls this "currently not collectible" status. You still owe the debt, but collection activity pauses while you recover. You must request this before or immediately after the deadline.
Pay what you can, even if it is not the full amount. Paying something by the deadline shows good faith and reduces the total amount subject to penalties. If you owe $5,000 and can pay $2,000 by April 15, pay it. The remaining $3,000 will still accrue interest and penalties, but you have stopped the clock on half the debt.
How to find your specific tax deadlines
| Tax Type | Where to Find the Deadline | Typical Due Date |
|---|---|---|
| Federal income tax | IRS.gov or your tax return instructions | April 15 (or next business day) |
| State income tax | [Your state] department of revenue website | Usually April 15; check your state |
| Estimated federal tax (self-employed) | IRS.gov Form 1040-ES | April 15, June 15, Sept 15, Jan 15 |
| Property tax | Your tax bill or county assessor/tax collector website | Varies by county; check your bill |
| Sales tax (business remittance) | [Your state] department of revenue | Usually monthly; varies by state |
The most reliable way to find your deadline is to look at the official document or bill. Your property tax bill shows the due date. Your federal tax return instructions show April 15. Your state tax agency website shows state deadlines. If you are self-employed, the IRS Form 1040-ES shows estimated payment dates. If you own a business, your state's tax registration materials show sales tax remittance schedules.
Do not rely on memory or assume your deadline matches someone else's. Tax deadlines are specific to your situation, your state, and your county. Checking once takes five minutes; missing a deadline costs hundreds or thousands in penalties and interest.
Frequently Asked Questions
What happens if the tax deadline falls on a weekend or holiday?
The deadline automatically moves to the next business day. For example, if April 15 falls on a Saturday, you have until Monday to file and pay. The IRS and most state tax agencies announce these shifts in advance. Check the agency website a few weeks before the deadline to confirm the exact date.
Can I file my taxes late if I request an extension?
Yes, you can file late if you request an extension before the original deadline. For federal taxes, Form 4868 gives you six extra months. However, an extension to file is not an extension to pay — if you owe money, you still owe it by April 15, and penalties begin accruing on April 16 if you have not paid.
What if I cannot pay my property tax by the deadline?
Contact your county tax collector or assessor's office immediately to ask about a payment plan or hardship deferral. Many counties will work with you if you reach out before the deadline. If you wait until after the deadline, penalties and interest kick in, and your county can eventually place a lien on your property or foreclose.
Do I have to pay estimated taxes if I am self-employed?
Yes, if you are self-employed or have income not subject to withholding (like investment income or rental income), you must pay estimated taxes four times a year: April 15, June 15, September 15, and January 15. If you do not, you will owe penalties when you file your annual return, even if you have paid the correct total amount by April 15 of the following year.
What is the difference between a penalty and interest on unpaid taxes?
A penalty is a fixed charge for breaking the rule — for example, 0.5 percent per month for not paying on time. Interest is the cost of borrowing the money, calculated daily and compounded. Together, they can add 30 to 50 percent to your original debt over a few years. Both stop accruing only when you pay the full amount owed.