Tax payments due dates depend on what type of tax you owe
The due date for a tax payment is not the same across all taxes. Income tax, property tax, sales tax, and estimated tax each have their own important date set by federal, state, or local law. If you are paying a tax bill with a credit card, the due date does not change — but understanding which important date applies to you matters because missing it can mean penalties and interest charges on top of what you already owe.
The most common tax important date people encounter is federal income tax, which is due April 15 each year for most people filing a 1040 form. State income tax important date often match this date, though some states have different schedules. Property taxes, by contrast, are usually due once or twice a year on dates set by your county or municipality — these vary widely by location. If you are self-employed or have investment income, you may owe estimated tax payments four times a year on specific dates the IRS publishes.
When you pay any of these taxes with a credit card, the payment important date itself does not shift. What changes is the processing time — a credit card payment may take one to three business days to reach the tax authority, so you need to submit it before the important date to may support it arrives on time.
Key Takeaways
- Federal income tax is due April 15 each year, state income tax often matches that date, and property taxes are set by your county or city on their own schedule.
- Estimated tax payments for self-employed people or those with investment income are due four times yearly on dates published by the IRS: April 15, June 15, September 15, and January 15.
- Credit card payments to the IRS or state tax agencies take one to three business days to process, so submit your payment several days before the important date to avoid a late filing penalty.
- Missing a tax important date results in penalties and interest charges added to what you owe, even if you pay the original amount later.
Federal income tax important date and how they work
The IRS sets April 15 as the important date for most people to file their federal income tax return and pay any tax owed. This date applies whether you file on paper or electronically, and whether you pay by credit card, check, or bank transfer. If April 15 falls on a weekend or holiday, the important date moves to the next business day.
If you cannot pay the full amount by April 15, you can still file your return on time — filing and paying are separate actions. Filing on time protects you from a failure-to-file penalty, though you will still owe a failure-to-pay penalty on the unpaid balance. The failure-to-pay penalty is typically 0.5% of the unpaid tax per month, charged until you pay in full.
When you pay federal income tax by credit card through the IRS website or an approved payment processor, the transaction is treated as received on the date you submit it, not the date it clears. This means if you submit a credit card payment on April 14, it counts as on-time even if the payment does not process until April 17. However, you must use an IRS-approved payment processor — paying a credit card company directly does not count as paying the IRS.
State income tax and property tax important date
Most states that have an income tax align their important date with the federal important date of April 15. However, some states have different dates or staggered important date depending on your filing status or income level. You can find your state's important date on your state tax authority's website, which is usually named the Department of Revenue or similar.
Property taxes work differently because they are assessed and collected by counties or municipalities, not the state. Your property tax bill will show the due date or dates — many areas have two payment periods per year, often in spring and fall. Some counties allow you to pay online with a credit card, while others require check or bank transfer. If your property is mortgaged, your lender may pay property taxes from an escrow account, in which case you do not pay directly.
Missing a property tax important date can result in a lien placed on your property, meaning the government has a legal claim against it. This is more serious than an income tax penalty and can affect your ability to sell or refinance the property.
Estimated tax payments for self-employed people and investors
If you are self-employed, own a business, or have significant investment income, you may owe estimated tax payments instead of or in addition to a single annual payment. These are due four times per year: April 15, June 15, September 15, and January 15. The IRS publishes these dates each year, and they do not change unless a holiday falls on the due date.
Estimated tax payments are meant to spread your tax burden across the year rather than requiring a large lump sum in April. If you do not make these payments and owe more than $1,000 at tax time, you may face an underpayment penalty even if you eventually pay the full amount. The penalty is calculated based on how much you should have paid and when.
You can pay estimated taxes by credit card through the IRS payment processors, and the same rule applies: the payment is considered on-time if you submit it by the important date, even if processing takes a few days.
What happens if you miss the important date
Missing a tax important date triggers two separate penalties: a failure-to-file penalty if you do not submit your return, and a failure-to-pay penalty if you do not pay the tax owed. The failure-to-file penalty is typically 5% of the unpaid tax per month, while the failure-to-pay penalty is 0.5% per month. Both penalties accrue until you pay in full or reach a maximum, usually 25% of the original tax owed.
In addition to penalties, you owe interest on the unpaid balance. The IRS sets the interest rate quarterly — it is currently in the range of 8% to 9% per year, though this changes. Interest compounds daily and accrues from the due date until you pay.
If you owe a significant amount and cannot pay by the important date, you have options. You can request a payment plan through the IRS, which allows you to pay in installments over time while still owing interest and penalties. You can also request a short-term extension of the important date itself, though this is different from an extension to file your return.
How credit card processing affects your payment important date
When you pay taxes by credit card, the payment processor charges you a convenience fee — typically 1.87% to 2.35% of the amount paid. This fee is separate from your tax bill and is charged by the processor, not the government. You pay this fee in addition to your tax, so a $5,000 tax payment might cost you $5,094 to $5,118 total.
The key point for meeting the important date is that the IRS and most state tax agencies consider your payment received on the date you submit it through their approved processor, not the date the credit card company processes the charge. This means you do not need to account for credit card processing time when calculating your important date — submit by the important date and you are on time.
However, you must use an official government payment processor or the tax agency's own website. Paying a credit card company or bank directly does not count as paying the tax authority. The IRS lists approved payment processors on its website, and state tax agencies do the same.
Extensions and what they do and do not cover
The IRS allows you to request an extension to file your tax return, which gives you until October 15 to submit your return instead of April 15. However, an extension to file is not an extension to pay. If you owe tax, it is still due on April 15 even if you have an extension to file. If you do not pay by April 15, you owe failure-to-pay penalties and interest starting that date, even though you have until October 15 to file.
An extension to file is useful if you need more time to gather documents or calculate your tax, but it does not help you avoid penalties if you cannot pay. To avoid penalties, you need to pay by April 15 or request a payment plan before that date.
Some states offer their own extensions, and the rules vary. Check your state tax authority's website to see what extensions are available and what they cover.
Frequently Asked Questions
If I pay my tax by credit card on April 14, does it count as on-time even if it does not process until April 17?
Yes, if you use an IRS-approved payment processor or your state tax agency's official website. The payment is considered received on the date you submit it, not the date it clears. However, you must submit it through the correct channel — paying a credit card company directly does not count.
What is the difference between an extension to file and an extension to pay?
An extension to file gives you more time to submit your tax return, usually until October 15. An extension to pay gives you more time to pay the tax owed. You can have one without the other. If you file late but pay on time, you avoid the failure-to-file penalty but may still owe interest on the unpaid balance.
Do I have to pay property tax by the same important date every year?
Property tax important date are set by your county or municipality and are usually the same each year, though the exact date may shift slightly if it falls on a weekend or holiday. Your property tax bill will show the due date. Some areas have two payment periods per year rather than one.
Can I pay estimated taxes late if I make up the amount later?
You can pay late, but you will owe an underpayment penalty calculated based on how much you should have paid and when. The penalty is separate from the tax itself. It is better to pay on the due date or request a payment plan before the important date.
What happens if I cannot pay my full tax bill by the important date?
You can request a payment plan through the IRS or your state tax agency, which allows you to pay in installments. You will still owe interest and penalties on the unpaid balance, but a payment plan prevents additional penalties for non-payment. Contact the tax agency before the important date to set up a plan.