15 Hidden Wedding Costs Couples Forget, Plus When Each Bill Is Due

Many venues and caterers add a service charge on top of food and drinks. Zola's guide puts service charges and gratuities at 18 to 22 percent of vendor costs, and 57 percent of couples in its survey faced a mandatory venue service fee.

On $8,000 of food and drinks, 20 percent is $1,600. Ask whether the charge goes to staff or to the venue, because that changes whether you also tip.

Many vendor quotes leave out sales tax, and what gets taxed depends on your state. Tax on food, drinks and rentals can add hundreds of dollars.

Ask each vendor whether the quote includes tax, and if not, what rate applies.

Zola's guide puts delivery and setup at $200 to $500 per vendor. Rentals, flowers and cake are the usual ones.

Check whether pickup the next morning costs extra, and whether the venue charges for late load-out.

Some venues charge a fee per slice to cut a cake from an outside baker, or a fee per bottle if you bring your own wine. Neither shows up until you ask.

Get the venue's list of outside-vendor fees before you book the baker or buy the wine.

Photographers, DJs, venues and bartenders often bill extra for every hour past the contract. A late start or a long toast block can push you over.

Write the overtime rate next to each vendor's name, and give your point person a cap they can approve on the day.

Some vendors add a fee when you pay by credit card. On a large final balance, even a few percent adds up.

Ask how each vendor prefers to be paid, and whether a check or bank transfer avoids the fee.

Postage surprised 29 percent of couples in Zola's survey. The USPS Forever stamp rose to 82 cents on July 12, 2026, and each extra ounce costs 29 cents more.

Square envelopes and thick suites cost more to mail, and a stamped reply card doubles the stamp count. Take one finished invitation to the post office and have it weighed before you buy stamps.

Alterations also surprised 29 percent of couples, and Zola lists the average at $550. Hemming, a bustle and taking in the bodice are common.

Ask for an alterations estimate before you buy the dress, not after.

Trials surprised 21 percent of couples in Zola's survey. Many stylists price the trial separately from the wedding day.

Ask whether the trial is included, and whether there's a travel fee for coming to your getting-ready spot.

Zola's survey found 79 percent of couples bought a marriage license as part of their wedding costs. Fees, waiting periods and how long the license stays valid are set by your state and county.

Check your county clerk's website for the current fee and rules, and add it as its own line.

In Zola's survey, 58 percent of couples bought wedding party gifts. Parents, readers and the person who runs your timeline often get a thank-you too.

Pick one amount per person and multiply it out now, so it isn't a last-week purchase.

If a service charge doesn't go to staff, couples often tip the catering team, bartenders, hair and makeup and delivery crews. Read each contract first, because some already include gratuity.

We can't give one right amount for every area, so pick your amounts early, put cash in labeled envelopes and hand them to your point person.

The Knot's 2026 Real Weddings Study puts average rental spend at $2,000. An empty venue may need tables, chairs, linens, plates, lighting and even restrooms or a generator.

Get the venue's inventory list and price out every missing item.

Many contracts require you to feed vendors who work through dinner, so add their meals to your caterer's count. Some venues also require event liability insurance.

Ask the venue for its insurance requirement and ask each vendor whether a meal is in the contract.

The Knot's study puts the average rehearsal dinner at $2,800 and transportation at $1,100. Welcome bags, a getting-ready space and a day-after brunch are easy to forget.

Decide which of these you're paying for, and give each one its own line.