The most useful number is the one you decide first. Before you fall in love with a venue or a florist, agree on a total you are genuinely comfortable spending — including the money you would rather not think about, like tips, taxes and service charges. Everything below flows from that figure.
Start with the total, then divide
Working top-down keeps you honest. As a rough guide for a full celebration, planners often split the total something like this — adjust to your priorities:
- Venue & catering: 45–55% — almost always the largest line.
- Photography & video: 10–12%.
- Entertainment & AV: 8–10%.
- Flowers & décor: 8–10%.
- Attire, stationery & extras: 8–10%.
- Contingency: 5–10%, untouched until you truly need it.
Know where the hidden money goes
Overspend usually hides in the small print, not the headline items. Read every quote for these:
- Service charges and gratuities — often 18–24% on catering.
- Tax, which may or may not be shown in the headline price.
- Delivery, setup, overtime and breakdown fees.
- Rentals you assumed were included — linens, glassware, restrooms, power.
Cost per head is your fastest reality check. Divide your total by your guest count early — if the number surprises you, trimming the list is usually less painful than trimming the day. Ten fewer guests can fund the band.
Decide your three non-negotiables
No budget stretches to "the best of everything". Pick the three things you will remember — perhaps the food, the photographs and the music — and fund those first. Everything else can be good rather than exceptional, and no guest will notice the difference. This one exercise resolves most budget arguments before they start.
Finally, track the plan against reality in a single shared document, and update it the day a deposit is paid — not a week later. A budget you actually maintain is worth more than a perfect one you abandon in month two.