How to Budget for a Wedding (UK): A Simple Step-by-Step Guide

The calm way to plan your wedding spend in 2026 — start from one number, split it sensibly, and keep it honest as you book.

Most couples start their wedding budget with a blank spreadsheet and a rising sense of dread. There's a far easier way. Instead of guessing each cost from scratch, you start from one number — what you can comfortably spend — and work backwards, letting sensible percentages do the heavy lifting. Here's the whole method in five steps.

Step 1: Agree your one number

Before anything else, settle the total. Add up what you can save by the wedding date, plus any contributions from family — and be honest about what's a firm promise versus a vague "we'll help." This single figure is the anchor for every decision that follows. If you're not sure what's realistic, our breakdown of how much a UK wedding costs in 2026 gives you a grounded starting point.

Step 2: Split the total across categories

This is where most budgets fall apart — and where starting from percentages saves you. Rather than pricing 15 things individually, apply a sensible split to your total and you instantly have a working plan for every category. Here's a typical UK starting split:

These are a starting point, not a rule. The value is that you begin with a complete plan across every line — then move money around — rather than staring at empty cells. (This "type one total, watch it split itself" approach is exactly how the reverse-budgeting feature in our planner works.)

Step 3: Adjust to your priorities

No two couples spend the same way. If photography matters more than flowers, pull a few percent from one into the other. The only rule: when you add to one category, take it from another so the total never moves. Decide your two or three non-negotiables early and let everything else flex around them.

Step 4: Protect a contingency

Keep 5–10% untouched. This is the single best defence against the costs couples forget — corkage, supplier meals, overtime, tips, alterations and the rest. They're rarely in the headline quotes, and they're exactly what tips a careful budget into the red. A ring-fenced cushion means a surprise is an annoyance, not a crisis.

Step 5: Track it as you book

A budget is only real if it's maintained. The moment deposits go out and balances fall due, a mental tally stops working. Log each payment as you book, mark what's paid versus outstanding, and check each quote against the typical UK spend before you commit — so you know whether £2,400 for a photographer is fair or steep before you sign. Couples who split contributions across both families should also track who has paid in and who still owes; our guide to who pays for what at a UK wedding covers how to settle that cleanly.

The most common budgeting mistakes

• Pricing categories in isolation. You end up over-committed before you've added everything up. Start from the total instead.
• Assuming someone else is paying. Unspoken assumptions about family contributions are how couples land thousands out of pocket.
• No contingency. The forgotten extras are predictable — plan for them.
• Not checking quotes against the average. Without a benchmark, you can't tell a fair price from a high one.

Try it free first

If you just want to see your money split across the big categories, grab the free one-page budget taster — type in one number, see the plan appear. When you're ready for the full picture (UK benchmarks, payment tracking, who-pays-what and the 22-item forgotten-costs checklist), the complete Wedding Ledger is a one-off £4.99 and works in free Google Sheets or Excel.

Frequently asked questions

How do you budget for a wedding?
Start from your total, split it across categories with sensible percentages, adjust to your priorities, keep a 5–10% contingency, and track payments as you book.

What should take the biggest share?
Venue and catering together — usually around half of the whole budget in the UK.

How far ahead should I set a budget?
Before you book anything. The total is what every other decision hangs off, so it comes first.