Getting Married This Summer? Tax Implications Every California Couple Should Know

Congratulations on your upcoming wedding! Between venues, guest lists, and honeymoon plans, taxes are probably the last thing on your mind — but a few smart moves now can save you thousands of dollars and prevent unpleasant surprises next April. At The Law Office of Pietro Canestrelli, we help newlyweds across Temecula, San Diego, Riverside, San Bernardino, and throughout California start their married life on solid financial footing.

Your Filing Status Changes Immediately

The IRS determines your filing status based on your marital status on December 31. If you marry any time in 2026 — whether June 1 or December 30 — you’re considered married for the entire 2026 tax year. This means you’ll file as either Married Filing Jointly (MFJ) or Married Filing Separately (MFS) for all of 2026.

For most couples, filing jointly produces the lower tax bill because of wider tax brackets, higher standard deduction ($32,200 vs. $16,100), and eligibility for credits and deductions that are reduced or eliminated when filing separately. However, there are situations where filing separately makes sense — particularly when one spouse has significant student loan payments under an income-driven repayment plan, substantial medical expenses, or liability concerns.

The Marriage Penalty vs. Marriage Bonus

Depending on your incomes, marriage can either increase or decrease your combined tax bill:

• Marriage bonus: Couples with unequal incomes typically benefit. When one spouse earns $200,000 and the other earns $40,000, the combined income is spread across wider joint brackets, reducing the total tax compared to two single returns.
• Marriage penalty: Couples with similar high incomes may pay more when filing jointly because their combined income pushes them into higher brackets faster. The OBBBA’s permanent TCJA brackets mitigate this somewhat, but the penalty still exists — particularly at the top rates and for California’s progressive state tax.

Run both scenarios before your first joint filing to determine which status produces the better result.

Update Your W-4 Withholding

One of the most common tax mistakes newlyweds make is failing to update their W-4 forms after marriage. If both spouses continue withholding as “Single,” the combined withholding may be too high (resulting in a large refund — money you could have used throughout the year) or too low (if the combined income pushes you into higher brackets).

After marriage, submit new W-4 forms to your employers reflecting your new filing status. Use the IRS Tax Withholding Estimator tool to determine the right withholding amount. For California, also review your DE-4 form with your employer to ensure state withholding is appropriate.

The Home Sale Exclusion Doubles

If either spouse owns a home before the marriage, getting married can affect the home sale tax exclusion:

• Single: Exclude up to $250,000 in capital gains from the sale of a primary residence
• Married filing jointly: Exclude up to $500,000 — but both spouses must meet the use test (2 out of 5 years), and at least one spouse must meet the ownership test

If you’re planning to sell a home after marriage, timing matters. If only one spouse has lived in the home for 2 years, you may need to wait until the other spouse also meets the use test to claim the full $500,000 exclusion. In California’s expensive real estate markets — where gains routinely exceed $250,000 — the difference between a $250,000 and $500,000 exclusion can save $35,000-$65,000 in combined federal and state taxes.

Combining Tax Debts: Protect Yourself

If your spouse owes back taxes, filing jointly can expose your refund to offset. The IRS will apply a joint refund to either spouse’s outstanding tax debt. To protect yourself:

• Injured Spouse Claim (Form 8379): If your refund is seized to pay your spouse’s pre-marital tax debt, Form 8379 requests that your portion of the refund be returned to you
• Innocent Spouse Relief: If your spouse underreported income or claimed fraudulent deductions without your knowledge, you may be eligible for relief from the resulting tax, penalties, and interest
• Consider filing separately: If your spouse has significant tax problems, filing separately shields you from joint liability — though at the cost of higher combined taxes

Read our detailed article on marrying someone with tax debt and our guide on protecting yourself when your spouse has tax trouble.

Student Loan Considerations

Marriage affects student loan repayment plans — and with the ARPA student loan tax exclusion expiring on January 1, 2026, the tax consequences of loan forgiveness have changed significantly:

• Income-Driven Repayment (IDR) plans: When you file jointly, both spouses’ incomes are counted in calculating your monthly IDR payment — potentially increasing payments significantly. Some couples choose to file separately to keep payments lower, but this comes with the tax penalties of MFS filing.
• Forgiveness is taxable again: Starting in 2026, IDR forgiveness after 20-25 years is taxable as federal income. Planning for this potential “tax bomb” should start now — not 20 years from now.

OBBBA Changes That Affect Newlyweds

Several OBBBA provisions are particularly relevant for newlyweds in 2026:

• Standard deduction of $32,200 (MFJ): More generous than two single returns at $16,100 each — same total, but the joint return gets access to credits and deductions unavailable to MFS filers
• SALT cap of $40,000: The same $40,000 cap applies to both single and joint filers — meaning marriage doesn’t double the SALT cap. Two single filers can each deduct $40,000 ($80,000 total), while a married couple is limited to $40,000 combined. This is a genuine marriage penalty for high-SALT couples.
• Child tax credit of $2,200 per child: Available on joint returns for children under 17. The credit phases out at $400,000 MAGI for joint filers (vs. $200,000 for single filers).

Name and Social Security Changes

If either spouse changes their name after marriage, the Social Security Administration (SSA) must be notified before filing a return with the new name. The IRS matches names against SSA records, and a mismatch can delay refund processing or reject the electronic filing.

File Form SS-5 with the SSA, then wait until your new Social Security card arrives before filing your tax return with the new name.

California Community Property: What’s Yours Is Theirs (Mostly)

California is a community property state, meaning all income earned and assets acquired during the marriage are presumed to be owned equally by both spouses. This has significant tax implications:

• All wages earned by either spouse during the marriage are community income — even if only one spouse works
• If you file separately, each spouse reports 50% of all community income
• Property acquired during marriage is presumed community property unless specifically documented otherwise

Understanding community property rules is essential for proper tax filing — and for protecting assets in the event of a future separation.

Start Your Marriage on Strong Financial Footing

At The Law Office of Pietro Canestrelli, we help newlyweds across Temecula, San Diego, Riverside, San Bernardino, and throughout California navigate the tax implications of marriage — from withholding adjustments and filing status decisions to protecting against spousal tax liability and planning for the future.

Getting married this summer? Contact our office for a newlywed tax planning consultation. A few proactive steps now can save thousands later.