Marriage & divorce paycheck calculator
Combining two incomes onto one joint return — or splitting one back apart — changes which tax brackets and deduction each dollar lands in. See the actual take-home difference, not just which filing status sounds better.
Worked examples
Computed by the same engine as the calculator above, on 2026 rules reviewed through 2026-08-09. Use the tool for your own figures.
$120,000 and $30,000, single against joint
Filing jointly is not automatically better, and how much it matters depends entirely on how far apart the two incomes are. A wide gap is where it helps: the lower earner's unused lower brackets absorb income that was being taxed at the higher earner's top rate.
| Single on $120,000 | $93,250 |
| Single on $30,000 | $26,285 |
| Combined, as two singles | $119,535 |
| One joint return | $123,185 |
| Joint filing gains | $3,650 |
Single filer in Texas, which levies no wage income tax, so this isolates the federal and FICA effect.
Two equal $75,000 earners
The same comparison with the gap removed, which is the control for the example above. The 2026 joint brackets and standard deduction are almost exactly double the single ones, so two equal incomes see close to no difference at all — the gap between the incomes IS the mechanism.
| Combined, as two singles | $123,185 |
| One joint return | $123,185 |
| Joint filing gains | $0 |
Single filer in Texas, which levies no wage income tax, so this isolates the federal and FICA effect. At higher incomes the joint bands stop being exactly double the single ones, and a genuine marriage penalty can appear for two high, similar earners.
Common questions
Does the wedding date matter?
Only whether it falls on or before 31 December. Marital status for the entire tax year is determined on the last day of that year, so a wedding in late December is treated identically to one in January of the same year — the whole year is filed as married either way.
Is filing separately ever better?
Sometimes, though rarely on tax alone. Married filing separately restricts or removes several credits and, as the additional Medicare threshold shows, is sometimes treated less favourably than a single filer — its threshold is $125,000 against $200,000 for a single filer. It is usually chosen for reasons other than the total bill, such as separating liability.
What happens to withholding after a divorce?
Both Form W-4s need updating. Withholding continues on whatever the form last said, so a form still claiming married status under-withholds once the filing status changes, and the shortfall appears as a balance owing at filing rather than as a smaller paycheck during the year.
Related calculators
Dependent changes
Adding or losing a dependent, and where it actually shows up.
Two incomes
Why two jobs withholding separately can still leave a bill.
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