OBBBA and Married Filing Separately: The Complete Exclusion Guide

Married Filing Separately filers are completely excluded from the three OBBBA individual deductions: the tips deduction (up to $25,000), the overtime deduction (up to $12,500), and the $6,000 senior bonus deduction. There are no exceptions and no workarounds. This is a statutory exclusion in IRC Sections 224, 225, and the OBBBA senior provision.

For 2026, this MFS exclusion is one of the most significant new tax law changes affecting married workers in tipped occupations, overtime-eligible jobs, or who are age 65 and older. This guide explains each exclusion, the dollar cost, and the narrow circumstances where MFS can still make sense despite these restrictions.

Tips deduction: IRC §224 and MFS

IRC §224, added by the OBBBA, allows eligible workers in customarily tipped occupations to deduct up to $25,000 of qualified tip income above the line. This deduction is claimed on Schedule 1-A and works alongside the standard deduction (you do not have to itemize to claim it).

The MFS exclusion is explicit in the statute. IRC §224 requires that married taxpayers who want to claim this deduction must file jointly. MFS filers receive no deduction - not a reduced amount, not a phase-out, but zero. The data underlying this site confirms this: mfsExcluded: true, mfsEligible: false.

The tips deduction is available for tax years 2025 through 2028. The MFS exclusion applies for all four of those years.

Overtime deduction: IRC §225 and MFS

IRC §225 allows non-exempt employees to deduct the premium portion of their overtime pay. For time-and-a-half, only the additional 0.5x premium above the regular rate qualifies - not the full overtime paycheck. The deduction cap is:

• Single and Head of Household: Up to $12,500
• Married Filing Jointly: Up to $25,000
• Married Filing Separately: $0 - excluded entirely

Like the tips deduction, this is not a phase-out - it is a flat exclusion. An MFS filer who worked hundreds of hours of overtime in 2026 receives no federal deduction for any of it.

The overtime deduction is also subject to an MAGI phase-out for eligible filers (10% reduction per $1,000 of MAGI over $300,000 for MFJ, $150,000 for single). MFS filers do not participate in this phase-out because they are excluded from the deduction entirely.

Senior bonus: OBBBA §70103 and MFS

The OBBBA added a $6,000 above-the-line deduction for taxpayers who are age 65 or older as of the end of the tax year. This is separate from and in addition to the existing additional standard deduction for age 65+ (which remains unchanged).

MFS filers are excluded from the senior bonus deduction. A 68-year-old filing separately cannot claim the $6,000, even though the same person filing as single or filing jointly would qualify (subject to the income phase-out above $75,000 single / $150,000 MFJ).

Note: the MFS exclusion applies only to the OBBBA senior bonus. The regular additional standard deduction for being age 65 or older is still available to MFS filers.

Why Congress excluded MFS filers

The MFS exclusion from the OBBBA deductions follows the same policy logic used in other provisions like the EITC: Congress wanted to prevent married couples from using the MFS status to artificially split income and double their deductions. Without the exclusion, a couple where one spouse earns all the tips or overtime could theoretically file separately and claim the deduction at the single-filer level, while also benefiting from the other spouse's income being sheltered elsewhere.

The tips deduction legislative history reflects concern about abuse through income-splitting arrangements. The $25,000 cap per taxpayer, with MFS exclusion, ensures that a married household can claim at most one $25,000 deduction (on a joint return) rather than two.

Dollar cost: a worked example

Consider a server who is married and files separately. She earns $55,000 in base wages and $25,000 in qualified tips in 2026.

Filing jointly (eligible for tips deduction):

• Base wages: $55,000
• Tips deduction: -$25,000
• Standard deduction (MFJ, assuming spouse takes it jointly): -$32,200
• Tips income is effectively sheltered from income tax

Filing separately (no tips deduction):

• Base wages: $55,000
• Tips deduction: $0 (excluded)
• Standard deduction (MFS): -$16,100
• The full $25,000 in tips is taxable income

At the 22% bracket, losing the $25,000 tips deduction costs approximately $5,500 in additional federal income tax. FICA taxes (Social Security and Medicare) apply to tips regardless of filing status - the tips deduction only reduces income tax, not payroll tax.

If the same worker also worked overtime and would have qualified for a $12,500 overtime deduction, that is another $2,750 in additional tax at the 22% rate. Combined, these two OBBBA exclusions could add over $8,250 to the MFS tax bill.

SALT halving: the compounding problem

On top of the OBBBA deduction exclusions, MFS filers face a halved SALT cap under the same legislation:

• SALT cap MFJ: $40,400
• SALT cap MFS: $20,200
• Phase-down threshold MFJ/single/HoH: $505,000
• Phase-down threshold MFS: $252,500
• SALT floor MFS: $5,000

For filers in high-tax states like California, New York, or New Jersey who itemize, losing half the SALT cap can add thousands more in taxable income on top of losing the OBBBA deductions. The compounding effect means MFS in a high-tax state with tipped or overtime income is particularly costly in 2026.

When MFS can still make sense

Despite all these disadvantages, there are situations where MFS produces a lower combined tax outcome - or where non-tax factors make it necessary:

1. Student loan IDR payments: If one spouse has significant federal student loan debt on an income-driven repayment plan, filing separately keeps the non-borrowing spouse's income out of the payment calculation. For PSLF borrowers especially, lower payments mean less total repaid before forgiveness. The IDR annual savings may exceed the additional MFS tax cost. See Married Filing Separately and Student Loans for a framework to compare the two figures.
2. Large medical expenses: The medical deduction threshold is 7.5% of AGI. If one spouse has high medical costs and lower individual income, filing separately can lower that spouse's AGI threshold and make more medical expenses deductible. Spouses without tipped or overtime income are not affected by the OBBBA exclusions.
3. Liability separation: If one spouse has tax compliance problems, fraud exposure, or unreported income, filing separately limits the other spouse's liability. The tax cost may be worth the legal protection.
4. Neither spouse qualifies for OBBBA deductions: For couples where neither works in a tipped occupation and neither earns FLSA overtime, the OBBBA exclusion is irrelevant. MFS decisions for those couples rest on the other factors above.

Community property states

In the nine community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, Wisconsin), community income is generally split 50/50 between spouses for federal tax purposes when filing separately. This means each spouse reports half of all community income, regardless of who earned it.

The community property split does not restore OBBBA eligibility. A worker in a community property state who earns tips must still file jointly to claim the tips deduction. Filing separately in a community property state means the tips income may be split 50/50, but neither spouse can deduct it on an MFS return.

Community property rules are complex and interact with the MFS exclusions in ways that require careful analysis. IRS Publication 555 covers community property rules for federal tax purposes.