Vacation Budget Calculator

How this is calculated

Accommodation is charged per NIGHT. Food and activities happen per DAY, and there are almost always more days than nights - you eat on the day you arrive and on the day you leave. That off-by-one is the reason the two are separate inputs. A seven-night trip is usually eight days of meals, and using seven for both understates food and activities by about an eighth. It is a small proportional error on a single line and a meaningful one across a family, which is exactly the kind of mistake that only shows up at the end of the holiday. Transport is entered as a single total rather than per person, because it works both ways depending on the trip - flights are per person, a tank of fuel or a hire car is not. Add up whatever applies and put the total in. Food and activities are per person per day, so they scale with both. Accommodation does not scale with people in this model, which is right for a room or a rental and wrong for anything charged per head - if yours is per person, multiply before entering it. What this deliberately does not do is guess at any of the figures. There is no built-in cost of a meal or a hotel, because those vary by an order of magnitude between destinations and travel styles, and a plausible-looking default would anchor you to a number that has nothing to do with your trip. Look up two or three real prices for where you are actually going. What it also cannot include is the long tail that ruins budgets: travel insurance, visas, vaccinations, parking at the airport, luggage fees, transfers at both ends, tips, currency conversion charges, phone roaming, and the pet or plant care back home. Those are individually small and collectively substantial, which is why the printable lists them.

Common questions

Why are nights and days separate?

Because they genuinely are. Accommodation is charged per night; food and activities happen per day, and there is nearly always one more day than nights - you eat on the day you arrive and on the day you leave. Using a single number for both understates food and activities by roughly an eighth on a week-long trip. It is a small error per line and a real one across a family, and it only reveals itself at the end of the holiday.

Why doesn't it suggest what things cost?

Because a default would anchor you to a number that has nothing to do with your trip. Food, accommodation and activities vary by an order of magnitude between destinations and travel styles - a plausible-looking figure would be confidently wrong for almost everyone and would feel researched. Look up two or three real prices for where you are actually going; it takes ten minutes and it is the only part of this that matters.

Should transport be per person?

It depends on the trip, which is why it is entered as one total. Flights are per person; a tank of fuel or a hire car is not; a train might be either. Rather than guess which model applies, add up everything that will actually be spent on getting there and back and enter the total.

What is the 'each extra day' figure for?

Deciding whether to stay longer, which is the most common question people actually have. It is one more night of accommodation plus a day of food and activities for everyone - the true marginal cost of extending, without the transport you have already committed to. It is usually much lower than people expect, because the flights are the same either way.

What is missing from the total?

The long tail, and it is substantial: travel insurance, visas, vaccinations, airport parking, luggage fees, transfers at both ends, tips, currency conversion charges, phone roaming, and pet or plant care back home. Each is individually small enough to forget and collectively large enough to matter. The printable lists them precisely because they are the ones people leave out.

How much contingency should I add?

Enough that a bad day does not become a financial problem, and treat it as a real line rather than optimism. The costs most likely to overrun are food, because eating out constantly costs more than people plan for, and activities, because the good ones are rarely the free ones. If you want a rule, add a clear margin on top and do not spend it in the first three days.

Take it further with AI

Copy this into ChatGPT or Claude with your own numbers filled in. It hands over the figures this calculator worked out, so the answer is built on real arithmetic instead of a guess.

I used the Vacation Budget Calculator at https://www.bfcbrilliance.com/tools/vacation-budget-calculator.

What I entered:
- Nights away (nights): ___
- Days away (days): ___
- People (people): ___
- Accommodation per night ($): ___
- Food per person per day ($): ___
- Activities per person per day ($): ___
- Transport — total for everyone ($): ___

What it calculated:
- Trip total: ___
- Per person: ___
- Per day, everyone in: ___
- Accommodation: ___
- Food: ___

Use those figures as given — they are already worked out, so please don't recalculate or estimate your own. Help me turn them into a plan: what to buy or do, in what order, roughly what it should cost, and the mistakes people most often make with this job.

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