EF-V: 2025 Form EF-V Business Filers Income Tax Payment Voucher (2025)
Oklahoma · Oklahoma Tax Commission · Used for tax years 2025
Oklahoma Form EF-V is a business filers income tax payment voucher for 2025. It identifies the entity and lists the balance due and payment amount to accompany a check or money order after the return has been filed.
Who files this form
Form EF-V is for business filers paying a balance due on a 2025 Oklahoma Form 512, 512-E, 512-S, 513, 513-NR or 514 after filing their return electronically or on paper.
Using this voucher is strongly encouraged, but there is no penalty for not using it. Individual filers completing Form 511 or 511-NR should use Form 511-V instead.
What you'll need
To mail a payment, prepare:
- The completed 2025 Form EF-V voucher, including the entity name, address, Federal Employer Identification Number, daytime phone number, tax year, balance due and payment amount.
- One check or money order payable to the Oklahoma Tax Commission, with the entity's name on it.
Your income tax return should already be filed. Do not enclose a copy with the voucher.
How to file
File your income tax return electronically or on paper before using Form EF-V.
For a mailed payment:
- Complete the voucher and cut along the dotted line. Submit the bottom portion.
- Make one check or money order payable to the Oklahoma Tax Commission. Make sure the entity's name appears on the payment.
- Put the voucher and payment loose in the envelope. Do not attach them or include a copy of your return.
- Mail them to:
Oklahoma Tax Commission
PO Box 26890
Oklahoma City, OK 73126-0890
You may make an online payment instead of paying by check or money order. Visit OkTAP at oktap.tax.ok.gov to learn more.
Common mistakes
- Do not send cash. Use only one check or money order per voucher.
- Do not leave the entity's name off the check or money order.
- Do not staple, paper clip or otherwise attach the payment to the voucher. Put them loose in the envelope.
- Do not fold the voucher or tear or cut below the indicated line.
- Do not enclose a copy of your Oklahoma income tax return. The return should already be filed.
- Do not use Form EF-V for individual Form 511 or 511-NR payments. Use Form 511-V instead.
Questions people ask
Is Form EF-V required?
The Oklahoma Tax Commission strongly encourages its use to process payments more accurately and efficiently, but there is no penalty for not using it.
Can I use the voucher if I filed my return on paper?
Yes. You can use it after filing your 2025 business income tax return either on paper or electronically.
Can I pay online instead?
Yes. An online payment is an alternative to a check or money order. Visit OkTAP at oktap.tax.ok.gov to learn more.
Should I include my tax return with the payment?
No. Your return should already be filed with the Oklahoma Tax Commission. Do not enclose a copy.
Who should receive the check or money order?
Make it payable to the Oklahoma Tax Commission, and make sure the entity's name appears on it.