No. Nothing in U.S. law requires you to change your last name when you get married. Taking your spouse’s surname, keeping your own, hyphenating, or doing something in between is entirely your choice, and there is no deadline attached to that choice. Your marriage certificate does not expire for name-change purposes, so you can switch a week after the wedding, a decade later, or never.
Your Options
Most people picture a name change as all-or-nothing, but you actually have several paths open to you:
- Take your spouse’s last name. The most traditional route. Your previous surname is dropped entirely.
- Keep your current last name. Perfectly legal and increasingly common. You don’t need to file anything or explain it to anyone.
- Hyphenate. Combine both surnames with a hyphen, for example Garcia-Nguyen. Either spouse can do this.
- Move your current last name to the middle. Your birth middle name is effectively replaced by your maiden name, and you take your spouse’s surname as your new last name.
- Create an entirely new last name. Some couples blend elements of both surnames into something new. This option almost always requires a court-ordered name change rather than relying on the marriage certificate alone.
Any option that appears on your marriage license can typically be processed through the standard agency steps (Social Security first, then driver’s license, passport, and the rest). Creating a brand-new surname generally means petitioning a court separately, which adds paperwork and filing fees that vary by jurisdiction.
If You Keep Your Name
Keeping your birth name requires zero paperwork. You don’t file anything, you don’t notify anyone, and your legal identity stays exactly as it is. A marriage does not automatically change your name in any government record; the change only happens if you actively pursue it.
A few practical situations come up often enough to flag. If you and your spouse have different last names and you travel together with children, you may occasionally be asked to show proof of your family relationship. Carrying a copy of your marriage certificate and your children’s birth certificates handles this. It rarely comes up domestically, but international border crossings are where agents are most likely to ask questions.
Taxes are not a complication. If you file jointly, the IRS cares about the name on your Social Security card matching the name on your return, not whether you and your spouse share a surname. Each spouse is identified by their own Social Security number, so mismatched last names between spouses create no filing issues whatsoever.1Internal Revenue Service. Name Changes and Social Security Number Matching Issues
There Is No Deadline
One of the most common worries is missing some cutoff date. There isn’t one. Your marriage certificate remains valid as proof of a legal name change indefinitely, whether you use it six months after the ceremony or six years later.
The one timing point worth knowing: if you want your new name to appear on the marriage license itself, you typically need to specify that when you apply for the license, before the ceremony. Skip that step and you can still change your name afterward, you’ll just be using the marriage certificate as supporting documentation instead of having the new name printed on the license.
If you do move forward, the Social Security Administration recommends waiting at least 30 days after your wedding date before requesting an updated card, because state vital records offices need time to process and upload the marriage record.
If You Do Decide to Change It
The change itself is a sequence rather than a single filing. You start with the Social Security Administration, because nearly every other agency verifies your identity against SSA records. A mismatch between your SSA record and your driver’s license will stop you at the DMV. There is no fee for the Social Security update, and your Social Security number stays the same.2Social Security Administration. Change Name With Social Security
From there, the usual order is driver’s license or state ID, then passport, then the long tail: banks and credit cards, employer and payroll, insurance policies, vehicle title and registration, voter registration, professional licenses, healthcare providers, and digital accounts. Credit history follows your Social Security number rather than your name, so a change does not reset or blank your credit file. Most lenders report your updated name to the credit bureaus automatically once you notify them.
Fees vary. Replacing a driver’s license typically runs somewhere between $25 and $50 depending on the state. Passport costs depend on which form applies to your situation, and the State Department publishes a fee calculator for the exact amount.3U.S. Department of State. Passport Fees Before you start, order several certified copies of your marriage certificate from the county clerk’s office where the marriage was recorded. You’ll burn through copies faster than expected, because some agencies keep the document you submit rather than returning it.
Non-Citizens and Green Card Holders
Lawful permanent residents who change a name through marriage need to update the Green Card by filing Form I-90, Application to Replace Permanent Resident Card, with USCIS, selecting the filing category for a legal name change and including the marriage certificate as supporting documentation.4U.S. Citizenship and Immigration Services. Immigration Documents and How to Correct, Update, or Replace Them USCIS filing fees change periodically, so check the current schedule on uscis.gov before submitting.
If you need to travel internationally before the new card arrives, U.S. Customs and Border Protection says you may use your current card in your prior name along with proof of the name change, such as the marriage certificate.5U.S. Customs and Border Protection. US Citizens/Lawful Permanent Residents Name Does Not Match Documents The same guidance applies to U.S. citizens whose passport still shows the prior name.
Deciding What’s Right for You
Because the choice is yours and the timing is yours, you have room to think it through without pressure. Some people want the shared surname and update everything within the first month. Others keep their name indefinitely, or wait years before deciding either way. Both approaches are legally identical in their effect: you are legally married regardless, and your rights as a spouse do not depend on sharing a last name.
If you are leaning toward changing it but aren’t sure, there is no harm in waiting. The marriage certificate will still be accepted as supporting documentation whenever you’re ready. If you are leaning toward keeping your name, you can stop reading here. Nothing is required of you.