Download Form OW-8-P (PDF)

Oklahoma Estimated Tax Underpayment Form Updated 11/-0001

Printable Oklahoma Income Tax Form OW-8-P

If you failed to pay or underpaid your estimated taxes for the past tax year, you must file form OW-8-P to calculate any interest or penalties due with your income tax return. For more information about the Oklahoma Income Tax, see the Oklahoma Income Tax page.

Oklahoma may also allow you to e-file your Form OW-8-P instead of mailing in a hard copy, which could result in your forms being received and processed faster. For more details, read more about the Oklahoma e-filing program.

Document Source: https://www.ok.gov/tax/documents/OW-8-P-15.pdf

View Other Oklahoma Tax Forms

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Imdividual Income Tax Return

Form 511 is the general income tax return for Oklahoma residents. Form 511 can be eFiled, or a paper copy can be filed via mail.

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Nonresident Income Tax Form

Nonresidents and part time residents need to file form 511 NR when doing their income taxes for Oklahoma.

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Individual Estimated Income Tax

You must pay estimated income tax if you are self employed or do not pay sufficient tax withholding. Estimated tax payments must be sent to the Oklahoma Department of Revenue on a quarterly basis.

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Annualized Estimated Tax Worksheet

This is the annual worksheet for self employment taxes.

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Estimated Tax Underpayment Form

If you failed to pay or underpaid your estimated taxes for the past tax year, you must file form OW-8-P to calculate any interest or penalties due with your income tax return.