Credits and breaks for Oklahoma families: the child credit, the 5% EITC, the 529 deduction and Parental Choice

Oklahoma’s family breaks are small individually and easy to miss collectively. Each dependent is worth a $1,000 exemption, or $45 of tax. The child credit on Form 511 line 15 is the greater of 5% of the federal child tax credit or 20% of the federal child and dependent care credit, nonrefundable, and it is available only when federal AGI is $100,000 or less; one dollar over and it is gone. The Oklahoma earned income credit is 5% of the federal credit, refundable, but computed under the federal rules in effect for 2020. The sales tax relief credit pays $40 for every person on the return, refundable, to households under $50,000 of gross income with a dependent. A deposit to one of Oklahoma’s own 529 plans is deducted up to $10,000, $20,000 on a joint return, and counts if made by April 15 of the following year. And the Parental Choice Tax Credit, $5,000 to $7,500 per private-school student, is real money but is applied for through the Tax Commission in a spring window and paid by check to the school; only the $1,000 homeschool version is a line on Form 511.

Oklahoma has no family credits of its own design; it borrows the federal amounts and pays a percentage. Head of household status matters here in a way it does not federally: a head of household uses the joint bracket schedule, so the 4.5% rate starts at $14,400 of taxable income rather than $7,200, but takes a standard deduction of $9,350 rather than $12,700. Everything on this page is unindexed and has been for years.

Exemptions for dependents

Oklahoma allows $1,000 for each dependent claimed on the federal return, on Form 511 line 11, alongside $1,000 each for the taxpayer and spouse. There is no phase-out; a household at $300,000 of AGI claims the same $1,000 per child as one at $30,000. A dependent with gross income over $6,350 files a return of their own.

The child care / child tax credit

Form 511 line 15, with the computation on Schedule 511-F, gives one credit under two names. It is the greater of:

• 20% of the federal child and dependent care credit from federal Form 2441, or
• 5% of the federal child tax credit, including the refundable additional child tax credit.

You get one or the other, not both, and only if federal AGI is $100,000 or less. The $100,000 line is a cliff: a family at $99,900 with two children claims 5% of $4,400, or $220; the same family at $100,100 claims nothing. The credit is nonrefundable, so it stops at the Oklahoma tax. For most families the child tax credit route wins, since 5% of $2,200 per child is $110 a child while 20% of the dependent care credit exceeds that only when the federal care credit itself is over $550 per child. A family paying full-time daycare for two children with a federal care credit in the $1,200 to $2,100 range comes out ahead on the care route, at $240 to $420.

The Oklahoma earned income credit

Oklahoma pays 5% of the federal earned income credit, refundable since tax year 2022, on Form 511 line 28, computed on Schedule 511-G with Form 511-EIC attached along with a copy of the federal return. The twist is that Oklahoma law ties its credit to the federal rules as they stood in 2020. The later federal changes, chiefly the permanent widening of the credit for workers without children under 25 and over 64, do not carry over, and the Form 511-EIC recomputes the credit under the 2020 rules and tables. For a worker with children the Oklahoma credit is close to 5% of the federal figure; for a childless worker the Oklahoma figure can be smaller or zero. On a $4,000 federal credit the Oklahoma credit is about $200. It is paid even when no Oklahoma tax is owed, which is the point of filing for many low-income households.

The sales tax relief credit

Form 538-S, carried to Form 511 line 25, pays $40 per person on the return, refundable, to full-year Oklahoma residents whose gross household income is $20,000 or less, or $50,000 or less if the household includes a dependent, a person 65 or older or a person with a qualifying physical disability. A single parent with two children and $38,000 of income gets $120. Gross household income counts everything that came into the household, including child support, Social Security and other money the income tax never sees. Anyone who received TANF during any month of the year is excluded. The form rides along with Form 511 and shares its due date, including the April 20 e-file date; a household not required to file can file Form 538-S on its own to collect the credit. It is the most-missed item on the Oklahoma return, because the households it is for often file nothing.

The 529 deduction

Contributions to Oklahoma’s own 529 plans, the Oklahoma 529 College Savings Plan and OklahomaDream 529, are deducted on Schedule 511-C, line C3, up to $10,000 a year on a single return and $20,000 on a joint one. Contributions made from January 1 through April 15 of the following year may be counted on the earlier year’s return, so a deposit made while the return is being prepared still works. Amounts over the limit carry forward five years. Another state’s 529 plan does not qualify, and neither does a Coverdell account. The deduction is worth 4.5% of the deposit, $450 on $10,000, and it is open to grandparents and other relatives who contribute, not just parents. Two things reverse it: a rollover out of the Oklahoma plan to another state’s plan, and a nonqualified withdrawal, both of which are added back on Schedule 511-B. Because the federal return never asks about 529 deposits, this is the line families most often leave off.

Foster care

A foster parent providing care under a contract with a child-placing agency deducts up to $5,000 of expenses on Schedule 511-C, line C4, when the care lasted at least six months of the year; shorter periods are prorated by month, and a married couple filing separately splits the amount.

Private school and homeschool: the Parental Choice Tax Credit

The Parental Choice Tax Credit is Oklahoma’s largest family benefit and it mostly does not run through Form 511. It pays a refundable credit per student attending an accredited private school, scaled by federal AGI:

The credit is limited to the tuition and fees actually charged. The statewide program cap was raised to $275 million beginning in fiscal 2027 by HB 3705; when applications exceed the cap, lower-income households have priority.

Families apply through the Tax Commission’s Parental Choice site in a spring window for the coming school year, March 16 to June 15, 2026 for 2026–27 (verify), with the school confirming enrollment and tuition. Approved credits are paid by check made out to the taxpayer and sent to the school, where the parent signs it over or, if tuition was already paid, collects it. None of that appears on Form 511. The one piece that does is the homeschool credit: up to $1,000 of qualified expenses per homeschooled student, claimed on Form 511 line 29 with a separate Form 591-D for each student and legible receipts attached. Both versions are refundable.

What the Oklahoma return does not have

There is no Oklahoma deduction for child care expenses, no renter’s credit, no credit for public school fees or supplies, no state adoption credit, and no state version of the federal education credits; the federal American Opportunity and Lifetime Learning credits are federal only, and tuition reduces nothing on Form 511. The new federal deductions for tips and overtime, which reach many working parents, do not reduce Oklahoma income because they come off after AGI. A dependent care flexible spending account at work does reduce Oklahoma income, because it reduces wages before they reach the W-2.

What trips people up

• The child credit claimed with federal AGI of $100,001 or more. There is no phase-out; the credit is simply not allowed.
• Both the 5% and 20% routes claimed. The credit is the greater of the two, not the sum.
• An Oklahoma 529 deposit made in early 2027 and never mentioned, or a deposit to another state’s plan deducted.
• The sales tax relief credit skipped by a household that owes nothing and did not file.
• The Oklahoma earned income credit taken at a flat 5% of the current federal credit without the Form 511-EIC recomputation.
• Private school tuition entered on Form 511 as if the Parental Choice credit were a return item.
• Head of household standard deduction entered as $12,700 instead of $9,350.