Mail your California return to the Franchise Tax Board in Sacramento

The address depends on whether you are enclosing a check. If you are mailing a return with a payment, send it to the Franchise Tax Board at PO Box 942840, Sacramento, CA 94240-0001. If you are mailing a return without a payment (for example, because you expect a refund or owe nothing), use PO Box 942867, Sacramento, CA 94240-0001. The Franchise Tax Board processes all individual California income tax returns; there is no separate address by county or filing status.

The key is matching the right address to what you are enclosing. Using the wrong box delays processing and can trigger notices about missing payments. If you are unsure whether your return requires a payment, check your calculation before you seal the envelope.

Key Takeaways

  • Returns with a check go to PO Box 942840, Sacramento, CA 94240-0001.
  • Returns without payment go to PO Box 942867, Sacramento, CA 94240-0001.
  • The Franchise Tax Board processes all California individual returns regardless of where you live in the state.
  • Write your Social Security number or ITIN on the check itself, not just on the return.
  • Mailing takes one to two weeks; the postmark date is your filing date, not the arrival date.

What to write on your check

If you are enclosing a payment, write "2024 California Income Tax" (or the year you are filing for) on the memo line of the check. Write your Social Security number or ITIN on the check itself — not just on the return. The Franchise Tax Board matches checks to returns by this number, and a check without it on the face can be misapplied or delayed.

Make the check payable to "Franchise Tax Board" or "FTB". Do not make it payable to the State of California or to a county office. Use a personal check, cashier's check, or money order. The Franchise Tax Board does not accept credit card payments by mail.

When to mail and what counts as on time

The postmark date on your envelope is your filing date, not the date the Franchise Tax Board receives it. If the postmark shows April 15 (or the next business day if the 15th falls on a weekend or holiday), your return is considered on time even if it arrives weeks later. Mail your return at least one week before the important date to give the postal service time to deliver it.

If you are mailing a payment and the postmark is after the important date, you owe interest and penalties on the unpaid tax from the original due date, even though you mailed it on time. The postmark protects you from a late-filing penalty, not a late-payment penalty. If you will miss the important date, consider filing electronically instead — e-filed returns are processed the same day.

Why electronic filing is faster

You can file your California return electronically through the Franchise Tax Board's website or through a tax software provider. Electronic returns are processed within days rather than weeks, and refunds are issued faster. If you are expecting a refund, electronic filing cuts the wait time significantly.

Electronic filing also eliminates the risk of your return getting lost in the mail or your check being misapplied. The Franchise Tax Board confirms receipt when ready, so you know your return arrived. If you file electronically and owe money, you can pay by electronic funds withdrawal, debit card, or credit card on the same day you file.

What happens after you mail your return

The Franchise Tax Board typically processes mailed returns within four to six weeks. You can check the status of your return on the FTB website using your Social Security number and filing status. If you are expecting a refund, you can track it there as well.

If there is a problem with your return — a missing signature, a math error, or a mismatch between your check and your return — the Franchise Tax Board will send you a notice by mail. Keep a copy of your return and your mailing receipt for your records. If you do not hear from the FTB within eight weeks and you are expecting a refund, contact them directly.

Mailing from outside California

The Sacramento PO Box address works from anywhere in the United States. Use the same address whether you live in California, another state, or outside the country. The postal service will deliver it to Sacramento regardless of where you mail it from.

If you are mailing from outside the country, allow extra time for international mail. Some countries' postal services take two to three weeks to reach the United States. Mail your return earlier than you would from within the US to may support it arrives by the important date.

Frequently Asked Questions

Can I mail my return to a local tax office instead of Sacramento?

No. All mailed returns go to the Sacramento PO Boxes. There is no local office that accepts mailed returns. If you prefer to file in person, the Franchise Tax Board has walk-in offices in Sacramento, Los Angeles, and San Francisco, but most people mail or file electronically.

What if I mail my return to the wrong address?

If you mail to an incorrect address, the postal service may return it to you or it may be forwarded to the correct FTB office, which delays processing. If you realize you mailed to the wrong address before the important date, file electronically as a backup to may support you meet the important date. Once you receive your return back, mail it to the correct address.

Do I need to use certified mail or return receipt?

No. Regular first-class mail is sufficient. The postmark is your proof of filing, so you do not need to pay extra for tracking. Keep your mailing receipt if you want a record that you mailed it, but the postmark date is what the Franchise Tax Board uses.

How long does it take to get a refund after I mail my return?

Mailed returns typically take four to six weeks to process, and refunds are issued within two to four weeks after that. If you file electronically, refunds are usually issued within two to three weeks. You can check the status of your refund on the FTB website.

What if my check gets lost in the mail?

If your check does not clear within eight weeks, contact the Franchise Tax Board. They can research whether the check was received and deposited. If it was lost, you can stop payment on the original check and send a new one. If the FTB received it but has not deposited it, they will process it when you call.