Event Planning Timeline: What to Book and When, From 12 Months to Event Day

Most event stress comes from doing the right things in the wrong order: printing invitations before the venue is confirmed, choosing a menu before you know the guest count, or booking a band whose set-up needs a power supply the venue does not have. A planning timeline fixes this. It does not need to be complicated; it simply lists what has to be decided, in what order, and roughly how far ahead. This guide gives a practical countdown for a medium-sized private or corporate event (roughly 50 to 150 guests), explains why each step sits where it does, and shows how to compress it when you have less time.

How to use this timeline

The lead times below are typical for popular dates such as Saturdays from May to September and the weeks before Christmas. For a weekday event, an off-peak month or a small gathering, you can often halve them. For a large wedding or conference in a busy city, add a few months to the venue and key supplier steps. The order matters more than the exact weeks: each stage depends on decisions made in the one before.

Before you start, agree three things in writing with whoever is paying or approving: the date range, the approximate guest number and the total budget. If you have not set a budget yet, our event budget planning guide walks through how to build one line by line.

9 to 12 months before: the fixed points

At this stage you are locking in the decisions that everything else depends on.

• Confirm the budget and guest range. A range (for example 80 to 100) is enough. It decides which venues are realistic.
• Shortlist and visit venues. Visit at the same time of day as the event if you can, so you see the light, the parking and the noise.
• Book the venue. Read the terms before paying a deposit: cancellation, minimum spend, finish time, noise limits and which suppliers are allowed.
• Book any supplier who is genuinely scarce. For weddings this is often the photographer and a popular band; for conferences it is AV production. One or two suppliers only; the rest can wait.
• Send a save-the-date if guests need to travel or book leave.

6 to 9 months before: the main suppliers

Once the venue is fixed you know the space, the rules and the timings, so supplier quotes become accurate.

• Catering. If the venue does not provide it, request quotes from two or three caterers and ask each what equipment, staff and kitchen access they need.
• Entertainment. Check the venue’s power, sound limits and load-in route before you sign.
• Decor and hire items. Marquees, furniture, lighting and staging all have lead times and need the venue’s floor plan.
• Contracts. For every supplier, get a written contract or booking confirmation that states what is included, arrival times, payment dates and cancellation terms. Our supplier contract checklist lists the clauses worth checking.
• Insurance. Check whether the venue requires public liability cover and whether event cancellation insurance makes sense for your spend.

3 to 6 months before: the guest experience

This is when the event takes shape from the guest’s point of view.

• Send invitations with a clear RSVP date (usually four to six weeks before the event) and a question about dietary needs and access requirements.
• Plan the running order. A rough timeline for the day (arrival, welcome, food, speeches, entertainment, finish) lets suppliers plan their staffing.
• Arrange transport and accommodation if guests are travelling: shuttle buses, taxi numbers, a hotel room block.
• Check accessibility. Step-free access, toilets, seating for those who cannot stand, and quiet space. Our event accessibility checklist covers the details.
• Order anything printed or personalised: signage, name badges, favours, menus.

6 to 8 weeks before: confirming details

• Menu tasting and final menu choice.
• Agree the floor plan with the venue and suppliers: table layout, stage, bar, buffet, entrance and emergency exits.
• Write the wet-weather plan for any outdoor element and confirm what it costs.
• Start the risk assessment. Walk the venue with the floor plan in hand and list hazards and controls.
• Chase missing RSVPs as the deadline approaches.

2 to 4 weeks before: final numbers

• Give final guest numbers to the venue and caterer. Most contracts set a deadline of 7 to 14 days before; once given, you usually pay for that number even if fewer guests arrive. See our RSVP and final numbers guide for how to estimate no-shows.
• Finalise the seating plan if you have one.
• Write the detailed run sheet: every timing, who is responsible and their phone number.
• Confirm arrival and load-in times with every supplier in writing.
• Pay balances that fall due before the event, and note which are due on the day.

The final week

• Send the run sheet to all suppliers and helpers, with a single contact for the day.
• Send guests a practical reminder: address, parking, start time, dress code and what to do if they are running late.
• Pack the event-day kit: tape, scissors, cable ties, phone chargers, first aid, printed copies of the run sheet and supplier contacts.
• Check the weather and trigger the wet-weather plan early if needed; suppliers need notice.
• Delegate. Name one person to deal with suppliers on the day so the host is free.

After the event

Returns of hired items, final payments, thank-you messages and a short debrief all happen in the week after. Note what worked and what you would change while it is fresh; it will save time next year.

Planning in less time

If you have three months or less, the same order applies; you simply run several stages at once. Some practical shortcuts:

• Be flexible on date or day. A Thursday or Sunday often has availability when Saturdays are long gone, and usually costs less.
• Choose an all-inclusive venue. Venues that provide catering, furniture and basic AV remove several separate bookings.
• Book the venue and caterer in the same week, then entertainment and decor the following week.
• Use digital invitations with an online RSVP so you have numbers quickly.
• Keep the decor simple. Lighting and a few strong focal points create more atmosphere for less lead time than elaborate installations.

A one-page timeline template

Copy this into a spreadsheet, add your event date and work backwards to fill in real dates:

• Event date minus 12 months: budget agreed; guest range agreed; venue visits.
• Minus 9 months: venue booked; scarce suppliers booked; save-the-date sent.
• Minus 6 months: catering, entertainment, decor and hire booked; contracts signed; insurance checked.
• Minus 4 months: invitations sent; transport and accommodation arranged; printing ordered.
• Minus 8 weeks: tasting; floor plan; wet-weather plan; risk assessment draft.
• Minus 3 weeks: RSVP deadline passed; final numbers given; run sheet written.
• Minus 1 week: run sheet sent; guest reminder sent; kit packed; weather checked.
• Event day: follow the run sheet.
• Plus 1 week: returns, payments, thank-yous, debrief.

Frequently asked questions

What should I book first?

The venue. Almost every other decision depends on its date, capacity, rules and included services.

How far ahead should I send invitations?

Six to eight weeks for most events, three to four months if guests need to travel, with a save-the-date earlier for weddings and overseas guests.

When do caterers need final numbers?

Usually 7 to 14 days before. Check your contract, as the number you give is normally the number you pay for.

Can I plan an event in four weeks?

Yes, for a smaller event at an all-inclusive venue with flexible dates. Book the venue in the first few days, send digital invitations immediately and keep the number of separate suppliers low.