How to Plan a Wedding Budget, Step by Step (Any Currency)

By Tuan · Published 22 October 2026

A wedding budget isn't really a spreadsheet problem. It's a series of decisions made in the right order. If you pick the venue before you know your total, the venue sets your budget for you. This guide goes through the order that works well for most couples, with a worked example. The amounts are written without a currency symbol, so they work for dollars, pounds or Australian dollars alike.

I've deliberately left out "average wedding cost" figures. Prices vary hugely by country, region, season and guest count, so a national average tells you very little about your own wedding. Your own quotes are the only numbers that matter.

Step 1: Decide the total before you look at anything

Start with three questions:

1. How much can the two of you put in without borrowing, from savings now plus what you can realistically save each month until the wedding?
2. Is anyone else contributing? If family members have offered money, ask for an amount, not "we'll help". Also ask whether it comes with expectations, such as extra guests or a particular kind of ceremony.
3. What's the latest date you need the money by? Deposits often fall due months before the day, so a contribution that arrives in the final month doesn't help with a venue deposit due a year earlier.

Add these up and you have your total. Write it down and treat it as fixed. Everything else is how you divide it.

Example: you can save 9,000 over the engagement, you already have 6,000 put aside, and a parent has pledged 5,000. Your total is 20,000.

Step 2: Take a buffer off the top

Something always costs more than you expected: a price rise, an extra fitting, delivery charges, a last-minute hire. Set aside a contingency of around 10% before you allocate anything.

In the example, 10% of 20,000 is 2,000, leaving 18,000 to plan with. If you reach the final month and the buffer is still there, that's a nice surprise, not wasted money.

Step 3: Split the rest into categories by your priorities

List the categories that apply to you, then give each one a share. There's no correct split. A couple who care most about photos and a couple who care most about food will divide the money very differently. A useful exercise is for each of you to pick your top three priorities and your bottom three, then put more into the top and less into the bottom.

Here is one possible split of the 18,000, purely as an illustration:

Check that your shares add up to exactly 100%. It's easy to end up at 104% without noticing.

Step 4: Work out your cost per guest

Guest count is the biggest lever you have, because many costs scale with it: catering, drinks, chairs, stationery, favours, and sometimes the size of venue you need.

Divide your venue and food budget by your guest count. In the example, 8,100 ÷ 80 guests = 101.25 per guest for venue and food combined. When a caterer quotes a price per head, you can see straight away whether it fits.

This also shows what changing the guest list is worth. If catering is 75 per head, inviting 10 fewer people saves 10 × 75 = 750 on catering alone, before drinks, stationery and favours. That's often easier than finding a cheaper photographer.

Step 5: Get quotes and record three numbers for every item

For each item, track:

• Estimate: what you planned to spend (from step 3).
• Actual: the price you agreed when you booked.
• Paid so far: deposits and instalments already paid.

"Still to pay" is simply actual minus paid. Most budget problems come from losing track of this column. You can be on budget overall and still be caught short because several balances fall due in the same month. Note the due date for every balance and look ahead at the next 30 days.

When an actual comes in above its estimate, move money from another category straight away rather than "sorting it out later". If photography comes in 300 over, decide there and then whether it comes from décor, from the buffer, or from a smaller guest list.

Step 6: Keep contributions separate and visible

If other people are contributing, track pledged and received separately. A pledge isn't money in the bank. If pledges add up to less than your planned budget, you want to know early, not when the final invoices arrive.

It also helps to agree whether a contribution is for something specific (for example, "the dress") or for the general pot. Either is fine, as long as everyone understands it the same way.

Step 7: Review once a month

Put a recurring date in your calendar. Each month, check:

• Total actual vs total budget, and how much of the buffer is left
• Which balances fall due in the next 30–60 days
• Any categories still at "estimate" that need quotes
• Whether the guest list has crept up

Ten minutes a month is far less stressful than a big reckoning two weeks before the wedding.

Common mistakes to avoid

• Forgetting the small stuff. Postage, alterations, tips, hair trials, marriage licence or notice fees, and outfit changes add up.
• Treating the buffer as spare money. It's for surprises, not upgrades.
• Not checking what's included. Venue packages differ: some include chairs, linen, cake cutting or staff, and others charge separately.
• Planning in two currencies. For a destination wedding, pick one currency for the budget and convert quotes as they come in. Note the rate you used, because it will move.

A tool if you want one

If you'd rather not build the spreadsheet yourself, my Wedding Budget Planner Spreadsheet follows the method above. It has about 50 common items in 11 categories, columns for estimate, actual, paid and still to pay, due-date highlighting, a summary with cost per guest, and a contributions tab. It works in Google Sheets, Excel and LibreOffice. There's also a Wedding Planner Bundle with the guest list tracker and a printable checklist. If you only want a quick paper overview of the planning stages, the free one-page wedding checklist is a good start.

Disclosure: the budget planner and bundle are my own products, sold on Payhip. The planner is pay what you want ($1 minimum) and the bundle is $2.50. The free checklist costs nothing. This article is general planning guidance, not financial advice.