Almost every couple comes in with a budget. Almost every couple goes over it. Not because they made one big bad decision — but because of five small categories that quietly stretch beyond their estimate. Here’s where it actually happens.

1. Florals

The single most common overage. Couples plan for centerpieces and forget the ceremony arch, the aisle, the cake table, the bar, and the bathroom vignette someone shared on Pinterest. Decide on a flower number — and a flower footprint — before you call a florist.

2. The Bar

Open bars are warm and generous and absolutely budget killers if you don’t shape them. Limiting to beer, wine, and two signature cocktails saves thousands without anyone noticing.

“A budget that holds is a budget you reviewed every two weeks — not the one you wrote in January.”

3. Stationery and Paper

Save-the-dates, invites, RSVP cards, programs, menus, place cards, signage. By the time it’s all printed, addressed, and shipped, the paper line item often doubles. A wedding website cuts this dramatically.

4. Last-Minute Guest Add-Ons

Every additional guest is roughly the per-plate cost plus a chair, a place setting, a centerpiece spot, an invitation, and a thank-you gift. Hold your number before you start adding cousins.

5. Tips and Service Charges

Service charges aren’t tips. Tips are tips. Build a tipping line into your budget from day one — usually 15–20% of vendor totals — so the final week isn’t a financial surprise.