Key Takeaways
- The standard deduction for married filing jointly is $32,200 in 2026, close to double the $16,100 a single filer or married-filing-separately taxpayer gets.
- Your filing status for the entire tax year is determined by your marital status on December 31 - get married any day of the year, and you file as married for that whole year.
- Married filing jointly is the better option in the large majority of cases; married filing separately usually only makes sense in specific situations like income-driven student loan repayment or separating liability for a spouse's tax issues.
- Combining bank accounts, mortgages, and other joint decisions have no direct tax implications on their own - the tax questions are really about filing status, not account structure.
- The most-overlooked money conversation before marriage isn't taxes - it's what happens to your combined finances (and any kids from a prior relationship) if one of you dies without an updated will or beneficiary designations.
The standard deduction for married filing jointly is $32,200 in 2026 — close to double the $16,100 a single filer gets, according to the IRS’s 2026 inflation adjustments. That’s usually the single biggest tax change marriage brings, but it’s far from the only one.
Your filing status is locked in by your marital status on December 31 of the tax year — get married any time during the year, even December 30, and you file as married for the entire year. There’s no prorating based on when the wedding happened.
Married Filing Jointly vs. Separately
For almost everyone, married filing jointly (MFJ) is the better option. You get the larger $32,200 standard deduction, tax brackets that are roughly double the single-filer thresholds at every level, and access to credits that are reduced or eliminated entirely under separate filing — including the Earned Income Tax Credit, education credits, and most of the Child Tax Credit.
Married filing separately (MFS) usually only makes sense in narrower situations: separating your tax liability from a spouse who has unresolved tax issues or is being audited, qualifying for income-driven student loan repayment plans that only count your individual income, or in the rare case where filing separately actually lowers your combined tax bill due to specific deduction phase-outs. Most tax software — including TurboTax and other major providers — will calculate your return both ways so you can compare before deciding.
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Six More Money Decisions to Make Before the Wedding
Combining bank accounts has no tax implications either way — it’s purely a personal and logistical decision, not something the IRS cares about. Whether you keep separate accounts, joint accounts, or a mix is entirely up to you and your spouse.
Joint vs. separate credit matters because lenders will look at both of your credit histories on a joint application like a mortgage. Check each other’s credit reports before applying for anything major, and address any issues ahead of time rather than discovering them during underwriting.
Home ownership and the mortgage should generally include both spouses if you’re both contributing financially, since it protects both parties’ claim to the equity if you divorce later, and simplifies inheritance if one spouse dies. Keeping one spouse off the mortgage and deed creates real complications in either scenario.
Children from a prior relationship need any custody, support, or care arrangements documented legally if they aren’t already, since informal verbal agreements don’t hold up well if a dispute arises after remarriage.
Differing spending habits are one of the most common sources of marital conflict, and they’re avoidable with an upfront conversation — many couples land on a set “no questions asked” discretionary amount each month for each partner, separate from joint household spending.
Estate planning is the one people put off longest. Without a will, updated beneficiary designations, and (if you have young kids) named guardians, your spouse and family can end up in a lengthy legal process at the worst possible time. This is also when it’s worth reviewing whether you have adequate life insurance coverage for your new combined financial picture, not just what you had as a single person.
Common Issues to Watch Out For
Not updating your W-4 withholding after marriage. Your combined income can push you into a different bracket than either of you was in individually — update your Form W-4 with your employer so your withholding matches your new joint tax situation.
Forgetting to update your name with the Social Security Administration if you change it. A mismatch between the name on your tax return and the name on file with the SSA can delay processing of your return and any refund.
Not comparing MFJ vs. MFS before automatically defaulting to joint. It’s the better option in the large majority of cases, but running the numbers both ways takes only a few minutes with most tax software and confirms you’re not leaving money on the table in your specific situation.
Overlooking retirement account beneficiary designations. These override what your will says — an outdated beneficiary form naming an ex or a parent can send retirement funds to the wrong person even with a fully updated will.
Assuming joint accounts don’t need both signatures for major decisions. Some joint accounts are structured so either party can act unilaterally — know how yours works before assuming your spouse can’t move money without your knowledge, or vice versa.
