File your state return through your state's tax agency, either online or by mail, using the same income documents you used for federal taxes
You file a state tax refund by submitting a state income tax return to your state's department of revenue (or equivalent agency). Most states let you file online through their website or through tax software; some still accept paper forms mailed to a state address. You need the same documents you used for your federal return — W-2s, 1099s, receipts for deductions — but the state form is separate from the federal one, even if you file both at the same time.
The state return asks about income earned in that state, deductions allowed under state law (which sometimes differ from federal deductions), and credits you may be due. If you paid too much in state taxes through withholding or estimated payments, the state owes you a refund. The timeline from filing to receiving your refund typically ranges from two to eight weeks, depending on whether you file electronically or by mail and whether the state needs to verify information on your return.
Key Takeaways
- Every state with an income tax has its own tax return form and filing deadline, usually April 15 to match the federal deadline.
- You can file online through your state's revenue website, through tax software, or by mailing a paper form to your state's tax office.
- Electronic filing is faster than mail and reduces errors, so most states encourage it and may offer it free to lower-income filers.
- Once you file, you can track your refund status through your state's website using your Social Security number and refund amount.
- If you file by mail, allow four to six weeks for processing; electronic filing usually produces a refund within two to four weeks.
Which states require a state tax return
Not all states have an income tax. Nine states — Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, Wyoming, and New Hampshire (for dividends and interest only) — do not tax wage income, so residents of those states do not file a state income tax return unless they have self-employment income or other specific sources.
If you lived in or earned income in a state that does tax income, you must file that state's return even if you also file a federal return. Some states require you to file if you earned any income in the state during the year; others set a minimum income threshold. Check your state's revenue website to confirm whether you are required to file.
How to file online through your state's website
Most states offer free online filing through their official tax agency website. Go to your state's department of revenue or taxation website, look for a link labeled "file your return" or "e-file", and follow the prompts. You will enter your personal information, income from all sources, deductions, and credits. The system calculates your tax and shows whether you owe or are due a refund.
Some states use their own filing portal; others partner with tax software companies and direct you to those platforms. Either way, the state's website will tell you which option to use. If your income is simple (W-2 wages only, standard deduction), many states offer a free return-preparation tool. If you have self-employment income, rental income, or itemized deductions, you may need to use paid tax software or hire a preparer.
When you file electronically, the state receives your return immediately and begins processing. You will receive a confirmation number; save this for your records. The state will then send you a refund status update by email or through your online account, usually within a few days to a week.
Filing by mail if you prefer paper forms
If you do not want to file online, you can request a paper tax form from your state's revenue office or download it from their website. Fill out the form by hand or on your computer, sign it, and mail it to the address listed on the form instructions. Include copies of supporting documents — W-2s, 1099s, receipts for deductions — if the state requests them.
Mail your return to the address provided by your state, not to a federal address. Use certified mail or regular mail with tracking if you want proof of delivery. The state's processing time for paper returns is longer than for electronic returns: typically four to six weeks from the date received, though some states take longer during peak filing season (February through April).
Keep a copy of everything you mail for your records. If the state loses your return or you need to follow up, you will need proof that you filed.
Using tax software to file your state return
Tax software like TurboTax, H&R Block, and TaxAct lets you file both federal and state returns in one session. You enter your information once, and the software prepares both returns. When you are ready, you can e-file both to the IRS and your state at the same time. The software guides you through state-specific questions and deductions, which is helpful if you are unfamiliar with your state's rules.
Most tax software charges a fee for state filing in addition to federal filing, though some offer free state filing if you use their free federal option. Check the pricing before you start. Once you submit, you receive confirmation numbers for both federal and state returns. The state processes your return on the same timeline as direct online filing — usually two to four weeks.
Tracking your state tax refund status
After you file, you can check the status of your state refund through your state's revenue website. Look for a "refund status" or "where's my refund" tool. You will need to enter your Social Security number (or federal employer ID if you filed as a business), your filing status, and the refund amount you expect. The tool will tell you whether the state has received your return, is processing it, has approved it, or has issued your refund.
If you filed electronically, the state usually updates the status within one to three business days. If you filed by mail, it may take a week or more for the state to log your return into the system. Once the state approves your return, it will show the refund date — either a direct deposit date or a check mailing date.
If the status tool shows no record of your return after two weeks (for electronic filing) or three weeks (for mail), contact your state's revenue office. Have your filing confirmation number or a copy of your return ready.
How your state refund is delivered
Most states offer direct deposit as the fastest refund method. You provide your bank account and routing number when you file, and the state deposits your refund directly into your account, usually within two to four weeks of approval. Direct deposit is free and reduces the chance of a lost check.
If you do not choose direct deposit, the state will mail you a paper check. A mailed check takes longer — typically four to six weeks from the approval date, depending on mail delivery time. Some states also offer a refund card (a prepaid debit card) as an alternative to a check or direct deposit.
When you file, you choose your refund method. If you change your mind after filing, contact your state's revenue office to see if you can update your choice before the refund is issued.
What to do if your state refund is delayed
If your refund does not arrive within the expected timeframe, first check the refund status tool on your state's website. The tool may show that the state is still processing your return or that there is a problem that needs your attention.
Common reasons for delays include missing or incorrect information on your return (such as a mismatched Social Security number or wrong bank account), math errors, or a mismatch between your state and federal returns. If the status tool shows a message asking you to contact the state, call the number provided or visit the state's office in person if you prefer.
If you filed by mail and the status tool shows no record of your return after three weeks, the state may not have received it. Contact the revenue office to confirm. If the return was lost in the mail, you may need to file again or provide proof of your original filing (such as a certified mail receipt).
Frequently Asked Questions
Do I have to file a state return if I only earned income in a state with no income tax?
No. If you earned all your income in a state without an income tax (Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, or Wyoming), you do not owe a state income tax return to that state. However, if you earned income in multiple states, you may owe a return to the state that taxes income.
Can I file my state return before I file my federal return?
Yes, you can file your state return independently of your federal return. However, many people file both at the same time for convenience. If you file state first and then make changes to your federal return, you may need to amend your state return as well if the changes affect your state taxable income.
What if I moved to a different state during the year?
If you moved and lived in two states during the tax year, you may owe a return to both states. Each state taxes income earned while you were a resident. File a part-year resident return in each state, reporting only the income earned during the months you lived there. Your state's revenue website has instructions for part-year filers.
How long does a state refund take if I file electronically?
Electronic state refunds typically arrive within two to four weeks of filing, depending on how quickly the state processes your return and your bank processes the direct deposit. Some states are faster; a few take up to six weeks during peak season. Check your state's website for its average processing time.
What if my state refund and federal refund are different amounts?
State and federal tax rules are different, so your refund amounts can differ. Your state may allow deductions or credits that the federal government does not, or vice versa. This is normal. Each refund is calculated separately based on each tax system's rules.