Somewhere between choosing a venue and finalizing a seating chart, most couples realize they haven’t actually thought about the part that makes the marriage real. The ceremony is the celebration. The marriage license is the paperwork that makes it legally binding, and it works on its own timeline, with its own requirements, separate from anything your planner or venue is tracking for you.
None of this is complicated once you know what to expect, but it does have real deadlines attached to it, including some that can catch a couple off guard close to the wedding date. Here’s what you actually need to get legally married, what a license costs and requires, and what to know if you’re planning to change your name afterward.
What actually makes a wedding legally binding
A wedding ceremony, no matter how beautiful, isn’t what makes a marriage legal. The marriage license is. You apply for it before the wedding, both partners and an officiant sign it during or right after the ceremony, and then it gets filed with the county to become an official marriage certificate. Skip that filing step and, in the eyes of the law, the ceremony never happened.
This is worth knowing early because it changes how you plan your timeline. The dress, the flowers, and the toasts are about the day itself. The license is a separate administrative task with its own window that has to close before or immediately after the ceremony, not sometime after your honeymoon.
How to get a marriage license
Requirements and costs vary by state and often by county within the same state, so treat any range here as a starting point rather than a final answer for your specific location.
| What to check | Typical range or requirement |
| Cost | Roughly $20 to $115 depending on the state, with a national average closer to $50 to $60 |
| Waiting period between applying and marrying | None in many states, up to a few days in others |
| Validity window once issued | As short as 30 days in some states, up to a full year in others, and a small number never expire |
| ID and documentation | Government-issued photo ID for both partners, proof of age, and personal details like date of birth |
According to US Marriage Laws, some states also reduce or waive the fee entirely for couples who complete an approved premarital education course, which usually takes four to eight hours online and costs $25 to $75. No US state currently requires a blood test to get married.
What you need to bring to apply
Both partners generally need to appear in person at the county clerk’s office with a valid government-issued photo ID, such as a driver’s license or passport. You’ll also need to confirm you’re both at least 18 (or meet your state’s specific rules for minors, which usually require parental consent), and provide basic personal details like your full legal name, date of birth, and sometimes a Social Security number.
If either of you has been married before, some counties ask for the date and how the previous marriage ended, divorce, annulment, or a spouse’s death, though this varies by location. Call ahead or check your county clerk’s website before you go, since requirements and hours can differ even between neighboring counties.
Marriage license timing and expiration
This is the part that trips people up. A license isn’t valid forever, and in some states the window is short enough that applying too early can actually work against you. Some states issue licenses valid for only 30 days, others extend that to 60 days or, in Nevada’s case, a full year, while a handful of states, including Idaho and Georgia, don’t put an expiration on it at all, according to Vital Records Online.
If your state also has a waiting period between applying and the ceremony, that eats into your usable window rather than adding to it. A three-day waiting period paired with a 60-day validity window leaves you with 57 usable days, not 60. This is exactly the kind of detail worth locking in once you’ve settled on your actual wedding date, so the license timeline lines up instead of becoming a last-minute scramble the week of the wedding.
Changing your name after marriage (or not)
Changing your last name is a personal decision, not a legal requirement of getting married, and it’s worth knowing that upfront since so much wedding content treats it as automatic. National surveys put the number of women who take their spouse’s last name somewhere between two-thirds and roughly eight in ten, with meaningfully lower rates among younger women and women with postgraduate degrees, according to Pew Research Center.
If you do change your name, your certified marriage certificate is the document that unlocks everything else: Social Security card first, then driver’s license or state ID, then passport, bank accounts, and finally smaller accounts like utilities and subscriptions. Order more than one certified copy of your marriage certificate when you file, since several of these offices will want to keep a copy rather than return it.
Consider this your actual to-do list, not just a formality
It’s easy to let the license become an afterthought when there’s a seating chart and a caterer competing for your attention, but it’s the one piece of wedding planning that has a real, unmovable deadline attached to it. Handle it early, confirm your specific state and county’s rules directly, and you’ve cleared the one task that actually determines whether the rest of the day counts.
Everything else, the flowers, the playlist, the toasts, is the part you’ll remember. This is just the part that makes it official.
The license makes the marriage official, but it’s not what you’ll pull up on your fifth anniversary. The Toast turns the toasts, stories, and messages from the people at your wedding into a keepsake that actually gets rewatched, the part of the day that was never about paperwork in the first place.
FAQs about getting legally married
How long is a marriage license valid before it expires?
It depends entirely on the state. Some states, including Hawaii, Delaware, New Jersey, and Missouri, issue licenses valid for only 30 days, while Nevada allows a full year, and a few states, like Idaho and Georgia, don’t expire licenses at all. Always confirm the specific window with your county clerk before applying.
Do you need witnesses to get a marriage license?
Requirements vary by state and county, so this isn’t universal. Some places require one or two witnesses to sign the license during the ceremony, while others only require the officiant’s signature, so check with your specific county clerk ahead of time.
How much does it cost to get legally married?
A marriage license typically costs $20 to $115 depending on the state, with a national average closer to $50 to $60. Some states reduce or waive the fee entirely for couples who complete an approved premarital education course.
What do you need to legally change your name after marriage?
Start with a certified copy of your marriage certificate, then update your Social Security card, followed by your driver’s license or state ID, passport, and financial accounts, generally in that order. Order several certified copies when you file, since multiple offices will want to keep one on record.
Can you get married without changing your last name?
Yes, keeping your name is entirely legal and doesn’t affect the validity of the marriage in any way. Roughly a fifth to a third of women in opposite-sex marriages keep their name, and that share is higher among younger women and women with postgraduate degrees.
