Wedding cost split calculator for two families
Quick answer
Split the costs that grow with guests by how many guests each side invited, and the fixed costs by a percent you agree on. Say $15,000 of per-guest costs for 120 guests is $125 a guest, and $9,000 of fixed costs is split equally. If side A invites 70 guests and side B 50, A pays $13,250 and B pays $10,750 of the $24,000.
Key points
- Per-guest costs follow the guests each side invited. Fixed costs follow a percent the payers agree on.
- The example: $15,000 over 120 guests is $125 a guest, and $9,000 of fixed costs is split 50 and 50.
- Side A, with 70 guests, pays $13,250. Side B, with 50 guests, pays $10,750. Together that is $24,000.
- The calculator takes up to four payers, and the fixed-cost percents have to add up to 100.
On this page
Payer 1 pays ($8,750.00 for guests + $4,500.00 fixed) $13,250
Payer 2 pays ($6,250.00 for guests + $4,500.00 fixed) $10,750
Payer 3 (not used) $0.00
Payer 4 (not used) $0.00
Cost per guest $125.00
Total of all costs $24,000
Show the formula
- Guest total = guests from all payers added together
- Cost per guest = per-guest costs total ÷ guest total
- Payer's guest part = cost per guest × guests invited by that payer
- Payer's fixed part = fixed costs total × that payer's fixed-cost percent ÷ 100 (the percents should add up to 100)
- Payer pays = guest part + fixed part, in whole cents so the shares add up to the total exactly
How do families split wedding costs by guest count?
Split the costs that grow with each guest by how many guests each side invited, and split the fixed costs by a percent everyone agreed to. The calculator works out each payer’s part of both and adds them.
To sort a cost into a box, ask whether the bill would change if 20 more people were invited. Food, drink, favors and invitations would, so they go in the per-guest box. A flat-fee venue, the photographer and the music would not, so they go in the fixed box.
How does the calculator work?
It takes up to four payers: the couple, each set of parents, a grandparent, anyone who agreed to pay.
- Add up the guests from every payer, counting each guest once under the payer who invited them.
- Divide the per-guest total by the guest total to get the cost per guest, and multiply that by each payer’s guests.
- Take each payer’s agreed percent of the fixed total.
- Add the two parts for each payer.
The fixed-cost percents have to add up to 100. If they do not, the calculator says so instead of guessing. A payer with 0 guests and 0 percent is left out.
Worked example: $24,000 for two families
Say the per-guest costs are $15,000 for 120 guests and the fixed costs are $9,000, split equally. Side A invites 70 guests and side B invites 50. These are the numbers the calculator opens with, where payer 1 is side A and payer 2 is side B.
- Cost per guest: $15,000 ÷ 120 = $125.
- Guests: side A is 70 × $125 = $8,750 and side B is 50 × $125 = $6,250.
- Fixed costs: $9,000 × 50% = $4,500 each.
| Payer | For guests | Fixed | Pays |
|---|---|---|---|
| Side A (70 guests) | $8,750 | $4,500 | $13,250 |
| Side B (50 guests) | $6,250 | $4,500 | $10,750 |
| Total | $15,000 | $9,000 | $24,000 |
Side A pays $1,250 more than half of the $24,000. It invited 20 more guests than side B, which is $2,500 of per-guest cost, and half of that is $1,250.
How do the other rules compare on the same $24,000?
The same $24,000 puts side A anywhere from $7,200 to $13,250 depending on the rule. Each rule is an agreement, and the table shows what each one costs a side.
| Rule | Side A pays | Side B pays |
|---|---|---|
| Guest count, fixed costs split equally (the example) | $13,250 | $10,750 |
| Equal halves | $12,000 | $12,000 |
| By income, say $60,000 and $90,000 so 40 and 60 | $9,600 | $14,400 |
| By what each side can give, say A gives $7,200 so 30 and 70 | $7,200 | $16,800 |
To try a rule other than the guest count, put the whole $24,000 in the fixed-costs box, set the per-guest box to 0 and type each payer’s percent. A split by income is a proportional split, and the percentage split calculator takes any percents you like.
What to settle before the first deposit
- Which box each cost goes in. Some costs sit between the two, so decide each one once and write it down.
- Whose guests are whose. The couple can be a payer too, with their own friends counted under them.
- Who pays each vendor. Whoever pays a deposit is owed the others’ shares, so keep a note of who paid what.
- The fixed-cost percents. Write them down and check that they total 100.
Mistakes to avoid
- Putting a per-head venue charge in the fixed box. A venue that charges by the head belongs in the per-guest box.
- Counting a cost twice. Each cost goes in one box, not both.
Keeping a record in EvenOut
Make an “Event” group, add each payer, and add a guest for anyone who is not on EvenOut yet, so their share is tracked now and they can claim it later. When someone pays a vendor, add it as an expense with “Paid by” set to that person. Split per-guest bills with “Shares” and type each side’s guest count as the shares, 70 and 50 here. Split fixed bills with “Percent” and type the agreed percents. Each person then sees what they owe or are owed with the others, and “Settle up” records a payment when one side reimburses another. EvenOut does not move the money.
The wedding budget template is a printable version of the cost list, and how couples split wedding costs covers the split between the two partners.
Frequently asked questions
Who counts as a payer?
Anyone who agreed to pay: the couple, one set of parents, both sets, or a grandparent. The calculator takes up to four payers and assumes nothing about who they should be. Leave a payer's guests and percent at 0 if they are not in the split.
What if a guest is invited by both sides?
Count each guest once, under one payer, and write down which. If a guest sits under both sides, both are charged for them and the per-guest total is shared over 121 names instead of 120, which is $123.97 a head instead of $125.
What if the guest count changes after the first payments?
The per-guest part follows the final headcount, so change the guest boxes and run it again. The fixed part does not move. What each payer has already paid stays on record, and the difference between that and the new total is what is left to settle.
Which box do the cake and the flowers go in?
Ask whether the price would change with 20 more guests. A cake priced by the slice goes in the per-guest box. A cake with one flat price goes in the fixed box, and so do flowers quoted as one package. Flowers priced per table follow the guests, so they go in the per-guest box.
Keep reading
- Guide How couples split wedding costs between themselves Four ways couples split a wedding budget, run on one $20,000 example: equal halves, by income, whole vendors or a joint fund, plus deposits and gift money.
- Template Wedding budget template with deposits and who pays A printable wedding budget with estimates, final costs, deposits and balance dates, plus a payer summary that shows what each person promised and has paid.
- Glossary Proportional split: meaning and formula A proportional split divides a cost by a weight such as income, nights present or room size. The formula and three worked examples, from $1,800 to $240.
- Calculator Percentage split calculator Enter a total and each person's percent to see every share in dollars and cents. $1,250 at 60 and 40 percent is $750 and $500. Percents off 100 are flagged.
- Calculator Bill split ratio calculator: split by shares or ratio Enter a total and each person's shares, such as 7, 5 and 3, or a ratio like 3:2:1. See the price of one share and every amount to the cent.