Event budget planner: how to plan and track your budget

Start with the number, not the list

Most budgets go wrong before the first quote arrives, because they start as a list of wishes with prices attached. Start the other way round: decide what you can spend in total, then divide it. The total comes from three questions. What do you have set aside today? What will you add between now and the event? Who else contributes, and is that a fixed sum or a promise to "help with the flowers"? Write every contribution down as a number; a promise without a number is not in the budget yet.

Three things drive the total more than anything else: how many guests you invite, what kind of venue you choose, and when the event takes place. A guest adds a meal, a drink, a chair and a slice of every per-head fee. A venue that includes catering, furniture and staff costs more upfront and far less in extras than a bare hall. A Saturday in June costs more than a Friday in March for the same room. If the total and the wishes do not meet, change one of these three before you trim everything else by a little.

The cost categories and their usual shares

Every event has the same handful of categories, whether it is a wedding, a company dinner or a birthday. The shares below are typical for a wedding of around eighty guests in Europe and give you a starting point; your own numbers will move, but if one category drifts far from these, you will know where to look.

• Venue and catering: 40 to 50 percent. The room, the meal, the drinks, the staff, and the service charge that is usually added on top.
• Photography and film: 10 to 12 percent. One category you cannot repeat afterwards.
• Music and entertainment: 5 to 10 percent. A band costs more than a DJ; a DJ costs more than a playlist and a good speaker.
• Flowers and decoration: 8 to 10 percent. Seasonal flowers and fewer, larger arrangements keep this down.
• Attire and beauty: 5 to 8 percent, including alterations and trials.
• Stationery and print: 2 to 3 percent. Invitations, signs, table cards, thank-you cards.
• Transport and accommodation: 3 to 5 percent, for the couple, the family and the vendors who travel.
• Fees and extras: about 5 percent. Officiant, insurance, licences, tips, the things nobody lists.

For a party, catering and the venue take an even larger share and photography often drops away. For a company event, swap attire for speakers, technology and registration, and expect the venue to charge for every cable. A useful cross-check is the cost per guest: divide your total by the number of guests and ask whether that figure is realistic for the kind of day you have in mind. If it is far below what a single dinner in your area costs, the guest list is too long for the total.

Planned versus actual

A budget is not one number per category but two: what you planned and what it actually cost. The gap between them is where the surprises hide, so record both from the start. The planned amount is your estimate before you have talked to anyone. The actual amount arrives in three steps: a quote, a contract, and finally an invoice, and each can differ from the last. Update the actual amount every time you learn something new, even if the invoice is months away.

The usual reasons the actual amount is higher than the quote are predictable: service charge and tax on top of a net price, overtime for staff and music, delivery and collection fees, corkage, the extra course nobody asked for, the deposit that turned out to be non-refundable. Ask every vendor one question before you sign: "What is not included in this price?" The answer is your list of extras.

Deposits, instalments and due dates

Vendors are rarely paid once. A venue typically asks for a deposit at booking, a second instalment a few months before, and the balance in the final weeks, sometimes on the day. Photographers, bands and caterers follow a similar pattern. Put every instalment in your budget with its due date, not only the total. This turns the budget into a payment calendar: you can see which month is expensive, and you avoid the common shock of three balances falling due in the same week.

Mark a payment as paid the day you make it, with the date. When a vendor says a payment never arrived, the date and the amount in your own records settle it in a minute. Keep a note of how each vendor wants to be paid; the ones who want cash on the day need a trip to the bank the week before.

Keep a buffer

Set aside 10 to 15 percent of the total before you allocate anything else, and treat it as spent. The buffer is for things you could not have known: a tent because the forecast turned, a second bus, a last-minute guest, the dress that needs one more alteration. It is not for upgrading the flowers in the quiet month before the event. If the buffer is still there two weeks before, you can decide then where it goes.

Where to save without guests noticing

Guests remember the food, the music and whether they felt welcome. They rarely remember the chair covers, the printed menu or the fourth kind of canapé. If you have to cut, cut in this order: things guests do not see, things guests see for a moment, things guests experience. A shorter bar list, seasonal flowers, a weekday or an off-season date, a venue that already looks finished, fewer printed items and one great photographer instead of two average vendors all save real money without changing the day.

The most effective saving is still the guest list. Ten fewer guests is one fewer table, with its flowers, its meals and its drinks, and often a smaller room.

Track as you go

A budget is only useful if it is current. Keep it in one place that you update the moment a quote or an invoice arrives, and look at it once a week while planning is active. The view you want is simple: per category, what you planned and what you have committed so far; overall, how much of the total is spent; and the payments that are due in the next weeks.

If you keep your event in EventAssets, the budget lives in the same place as the guest list and the event page: budgets per category, line items with a planned and an actual amount, due dates that are flagged when they come close, a mark as paid with the date, and a CSV export for your accountant or your partner. The support article shows every step.

A checklist

• Decide the total before you list a single item, and write down who contributes what.
• Allocate the categories, then set aside the buffer and treat it as spent.
• Record a planned and an actual amount for every line, and update the actual one with each quote and invoice.
• Ask every vendor what the price does not include.
• Enter every deposit and instalment with its due date, so the budget is also a payment calendar.
• Mark payments as paid with the date on the day you make them.
• Review once a week, and decide what to do with the buffer two weeks before the event.