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RunYourBlock

Free tool

Service charge apportionment calculator

Split a budget or a bill between flats the way your leases say: by percentage, by floor area or equally. Every amount is in whole pence and the parts always add up to the total.

Calculator

£
Split it
Flats
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Each flat pays

Each flat's part of the total
FlatShareAmount
Flat 115%£648.75
Flat 215%£648.75
Flat 317.5%£756.88
Flat 417.5%£756.88
Flat 517.5%£756.87
Flat 617.5%£756.87
Total£4,325.00

Amounts are worked out in whole pence. Where a split doesn't divide exactly, the leftover pennies go to the flats with the largest remainders, so the parts always add up to the total.

Which way should you split it?

The lease decides. Most leases give each flat a fixed percentage of the service charge; some use floor area, rateable value or “a fair proportion”. Some split different costs differently, for example a separate share for a lift or a car park. Check each lease, and use the method it sets out.

The lease shares should add up to 100% across the block. If they don't, talk to a solicitor before you bill: a shortfall can't simply be spread across the other flats. Read more about apportionment.