🧾 Married vs Single Tax Impact
Compare your federal tax bill filing as Married Filing Jointly vs as two single filers. Uses real 2025 IRS tax brackets.
💙 Tax situations can be complex. This uses the standard deduction and doesn't account for dependents, itemizing, or state taxes. Consult a tax professional.
Annual Incomes
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Tax Comparison
💍 Married Filing Jointly
$10,322
Combined income: $120,000
Standard deduction: $30,000
Taxable: $90,000
Effective rate: 8.6%
Standard deduction: $30,000
Taxable: $90,000
Effective rate: 8.6%
👤 Both Filing Single
$11,474
Spouse 1: $8,113
Spouse 2: $3,361
Combined effective rate: 9.6%
Spouse 2: $3,361
Combined effective rate: 9.6%
⚠️ Divorce increases taxes by $1,152/year
You were enjoying a "marriage bonus." Filing single will cost $96/month more in federal taxes.
2025 Bracket Breakdown
💍 Married Filing Jointly
| Rate | Income in bracket | Tax |
|---|---|---|
| 10% | $23,901 | $2,390 |
| 12% | $66,099 | $7,932 |
| Total | $120,000 | $10,322 |
👤 Spouse 1 (Single)
| Rate | Income in bracket | Tax |
|---|---|---|
| 10% | $11,951 | $1,195 |
| 12% | $36,525 | $4,383 |
| 22% | $11,524 | $2,535 |
| Total | $75,000 | $8,113 |
👤 Spouse 2 (Single)
| Rate | Income in bracket | Tax |
|---|---|---|
| 10% | $11,951 | $1,195 |
| 12% | $18,049 | $2,166 |
| Total | $45,000 | $3,361 |
Frequently Asked Questions
What is the marriage penalty?
When both spouses earn similar incomes, filing jointly can push combined income into higher brackets than filing separately would. This is the "marriage penalty."
What is a marriage bonus?
When income is very unequal, the lower earner effectively benefits from income-splitting, resulting in lower combined taxes than filing single. Divorce removes this benefit.
Can I file as Head of Household?
If you have a qualifying dependent living with you more than half the year, you may qualify for Head of Household — which has better brackets than Single.
Does divorce timing affect taxes?
Yes. Your filing status is your marital status on December 31. If your divorce finalizes Dec 30, you file as Single for that whole year.
Sources: IRS Filing Status Rules, IRS Publication 504 (Divorced Individuals), NCSL State Tax Laws. Last updated March 2026.