HOA dues and shared cost calculator
Work out how much each unit contributes to a shared building budget. Use equal shares or enter the weights from your association’s allocation schedule.
Calculate the share per unit
Use the budget and allocation basis you have chosen or been given. The result is a planning estimate.
Allocation results
- Allocated total
| Unit | Annual share | Monthly instalments |
|---|
Leftover cents go to the largest fractional shares, with ties settled by unit order.
When an annual share does not divide evenly by 12, some months differ by one cent. The instalments for each unit add up to its annual share.
How do you calculate HOA dues per unit?
Multiply the total shared expense by the unit’s weight and divide by the sum of all the weights. For equal shares, divide by the number of units. For an annual budget, split the annual share into 12 instalments.
Enter only the amount to be shared and the allocation that applies to that expense. Rounded amounts for the selected period add up to the entered total. Where an annual share cannot be split into 12 equal amounts to the cent, the calculator shows how many instalments are one cent higher.
A $12,000 annual budget split 50:30:20
With shares of 50, 30 and 20, the three units contribute $6,000, $3,600 and $2,400 for the year. Their monthly instalments are $500, $300 and $200.
Which figures should you use in your country?
United States
For an HOA or condo association, use the shared budget and the applicable assessment allocation in the governing documents. Florida’s condominium statute is one state example.
Florida statute example for condo common expensesEngland and Wales
For a leasehold flat, use the residential service charge budget and the share specified in the lease or relevant calculation schedule. A 20% share of a £15,000 annual budget is £3,000, or £250 per month.
GOV.UK guidance on leasehold service chargesCanada
For condo fees, use the applicable common expense share. In British Columbia, check the strata’s allocation and use unit entitlement where it applies. A share of 80 out of 1,000 in a C$50,000 budget is C$4,000.
British Columbia Strata Property Act, section 99Australia
For strata levies, use the contribution amount and the entitlement schedule that applies to the levy. New South Wales guidance explains how unit entitlement applies. At 120 of 1,000 entitlements, a lot’s share of an A$10,000 levy is A$1,200.
New South Wales guidance on strata leviesCommon questions
Can I split a one-off repair or special assessment?
Yes. Use the single-period option and enter the total approved amount to split along with the weights that apply to that expense.
What does changing the currency do?
It changes how the result is labelled and formatted. The figures stay in the currency you entered.
What if some units use a different allocation for one cost?
Calculate each group of costs separately using the weights that apply to it. Then add the shares for each unit.