Federal Income Tax Calculator

OKLAHOMA 529 PLAN · TAX YEAR 2026

Oklahoma 529 tax deduction calculator

Oklahoma lets you deduct up to $10,000 of contributions to Oklahoma's 529 plan, or $20,000 on a joint return. A single filer with $75,000 of wages who contributes $5,000 saves $225 of Oklahoma tax.

Your contribution

State tax saved

Oklahoma tax saved
$225.00
Deduction
$5,000.00
Deduction limit
$10,000.00
Oklahoma tax before
$2,829.50
Oklahoma tax after
$2,604.50

Oklahoma tax saved by contribution

With $75,000 of wages and one beneficiary.

Oklahoma tax saved by a 529 contribution — tax year 2026
ContributionSingleMarried filing jointly
$1,000$45$45
$5,000$225$225
$10,000$450$450
$20,000$450$900

Oklahoma 529 tax questions

Does Oklahoma have a 529 tax deduction?

Yes. Oklahoma lets you deduct up to $10,000 of contributions to Oklahoma's 529 plan, or $20,000 on a joint return.

How much does a $5,000 529 contribution save in Oklahoma?

$225 of Oklahoma tax for a single filer with $75,000 of wages, and $225 for a married couple filing jointly with the same income.

Which 529 plans qualify for Oklahoma's deduction?

Contributions to Oklahoma 529.

Can Oklahoma 529 contributions above the limit be carried forward?

Yes, for up to five years.

What the calculator leaves out

The calculator assumes the contribution goes to a plan that qualifies for the state's benefit: the state's own plan unless the state accepts any 529 plan. Wages are the only income, and they stand in for the income a state tests against its limits. Per-beneficiary limits assume the contribution is split evenly. Federal tax does not change, because 529 contributions aren't federally deductible. Carryforwards of earlier contributions, recapture on nonqualified withdrawals and city or school district taxes are left out.

Sources

Read the full assumptions and sources.