Wedding planning checklist: the 12-month timeline and budget

Start with three decisions

Before you look at venues or photographers, agree on three numbers. Everything else follows from them.

1. The total budget. Start from what you can pay without borrowing: savings you already have, plus what you can put aside each month until the date, plus family contributions that are confirmed. Not hoped for.
2. The guest count. It multiplies almost every line: food, drinks, tables, stationery, sometimes the size of the venue. Make two lists: the people the day doesn’t make sense without, and everyone else.
3. The date. A Saturday in June doesn’t cost the same as a Friday in October. Keep two or three dates open until the venue is booked.

What a wedding costs in 2026

In the US, The Knot’s 2026 Real Weddings Study surveyed 10,474 couples married in 2025. The average wedding cost $34,000, flat on the previous year, for 117 guests at $292 per guest. Couples hired 13 vendors on average. Each line below is an average of its own, so they don’t add up to the total:

In the UK, the two big surveys land close to each other. Hitched’s 2026 report, based on 2,020 couples married in 2025, puts the average at £21,990, or £272 per guest; weddings with more than 100 guests averaged £35,591, and 56% of couples overspent. Bridebook’s 2026 report, from around 7,000 couples, gives £20,604, with a venue averaging £6,040 before catering, reception catering £5,406, a photographer £1,484 and a dress £1,532.

The month matters. In Bridebook’s data, the average January wedding cost £11,000 against £23,809 in June. And 61% of Hitched couples received money from family towards the day.

Use these numbers to spot the heavy lines, not as a target. The honest way to build your own budget is the other way round: start from your total, then split it. One sum often settles the guest list: at $80 a head for catering, 100 guests is $8,000 before a single drink; at 150 guests, it’s $12,000.

The legal steps

The paperwork has fixed lead times, so it belongs in the timeline, not in the last month.

England and Wales. You must give notice at your local register office at least 29 days before the ceremony, and you must have lived in that registration district for the past 7 days. If you live in different districts, you each give notice in your own. The ceremony must take place within 12 months of giving notice. The statutory notice fee rose from £42 to £46.50 per person on 6 April 2026 (£63 if you’re subject to immigration control), as listed by local register offices. Couples where one partner is from outside the UK have extra requirements, so check GOV.UK early. Scotland and Northern Ireland have their own procedures.

United States. You need a marriage licence from the county or city clerk where you marry, and the rules change from one state, sometimes one county, to the next. Two examples:

• New York City: the licence costs $35, you must wait a full 24 hours before the ceremony (unless a judge waives it), and the licence is valid for 60 days (180 for active military).
• Travis County, Texas (Austin): the licence costs $80, or $20 with a completed premarital education course; there’s a 72-hour waiting period, which the course also waives; the licence is valid for 89 days.

So check three things with your clerk: the fee, the waiting period and the expiry date. Then put the application date in the calendar so the licence is valid on the day.

The 12-month timeline, month by month

Twelve months is comfortable for a mid-sized wedding. Shorter is possible if you accept less choice of venues and vendors. Order matters more than duration: book what’s scarce first (venue, caterer, photographer), then handle the details.

Keep the budget as a team (and with family)

A wedding budget rarely blows up on one big item. It blows up by accumulation: an upgrade here, an add-on there, a deposit someone forgot to mention. With 56% of UK couples going over budget in Hitched’s survey, three rules help:

• One budget, visible to both of you. Every signed quote, deposit and payment goes in the day it happens, with the balance still due and its date.
• Family contributions, recorded separately. Who gave what, towards which line. It prevents misunderstandings and makes thank-you notes precise.
• A buffer for surprises. At least 5% of the total, untouched until the final month.

If you’re also planning how to share money after the wedding, our guide to budgeting as a couple compares the three ways to split costs. For putting money aside every month until the date, the method is in How to save money.

The reminders to set today

Wedding deadlines are known months in advance, which is exactly why they’re easy to forget. The moment a quote is signed, set the reminder for its final payment. The moment the date is fixed, set the legal ones.

The most useful ones: giving notice or applying for the licence, each vendor’s final payment, the RSVP deadline, the date to send the seating plan to the venue, and the last day to change guest numbers with the caterer.

Where to save without spoiling the day

• Trim the guest list. It’s the one lever that moves almost every line at once.
• Pick an off-peak date or a weekday. Bridebook’s January average is less than half its June average.
• Get three itemised quotes for every big line and compare them line by line.
• Check what’s included: service charges, corkage, overtime, delivery and setup. Unplanned extras are where budgets slip.
• Match the registry to your life. If you already have a home, a honeymoon or house fund may be more useful than another set of plates.

Frequently asked questions

How far in advance should you start planning a wedding?

Twelve months gives you a good choice of venues and vendors, but many couples plan in six to nine. What can’t be squeezed is the legal lead time: at least 29 days’ notice in England and Wales, and a licence that’s valid on the day in the US.

What is a realistic budget for 100 guests?

In the US, The Knot’s average of $292 per guest would put 100 guests near $29,200; in the UK, Bridebook’s 100-guest weddings averaged £22,510. Treat these as reference points and build your own figure from real venue and catering quotes.

Who traditionally pays for the wedding?

There’s no rule any more. In Hitched’s survey, 61% of couples received money from family. Agree early who contributes what, and write it down.

Do we need a marriage licence if we have a religious ceremony?

In the US, yes: the licence is what makes the marriage legal, whoever officiates, so check your state’s rules. In England and Wales, most couples give notice at the register office whatever the ceremony; GOV.UK notes the process may be different for Anglican weddings, so ask the church.

In short

Good wedding planning comes down to three early decisions (budget, guests, date), booking the scarce things first, and a shared budget where every deposit and final payment has a date. First action: sit down together tonight, set your total budget and guest count, and create a joint savings goal with that amount.

Sources

• The Knot Worldwide, “The Knot Worldwide unveils 2026 Real Weddings Study”, 18 February 2026: theknotww.com; The Knot, “Average wedding cost” (vendor averages, 2026 study): theknot.com.
• Hitched, “The average cost of a wedding in 2026? Around £21,990” (2,020 couples, 2025 weddings): theknotww.com.
• Bridebook, “How much does a wedding cost? The UK average” (UK Wedding Report 2026, about 7,000 couples): bridebook.com.
• GOV.UK, “Marriages and civil partnerships in England and Wales: give notice”: gov.uk.
• Swindon Borough Council, “Marriage and civil partnership fees” (notice fee £46.50 from 6 April 2026): swindon.gov.uk; London Borough of Barking and Dagenham, “Marriage or civil partnership notice fees”: lbbd.gov.uk.
• Office of the City Clerk, New York City, “Marriage license”: cityclerk.nyc.gov.
• Travis County Clerk, “Marriage license”: countyclerk.traviscountytx.gov.

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