HOA Fee Budget Calculator
Estimate monthly HOA fees per unit based on your community's annual operating budget, reserve fund contributions, and number of units.
Formula
Step 1 — Gross Annual Need:
Gross Need = (Operating Budget + Reserve Contribution + Special Assessments) × (1 + Contingency% / 100)
Step 2 — Net Annual Need:
Net Annual Need = max(0, Gross Need − Non-Fee Income)
Step 3 — Monthly Fee per Unit:
Monthly HOA Fee = Net Annual Need ÷ Number of Units ÷ 12
Assumptions & References
- All units are assumed to carry an equal share of the budget. Weighted allocation (by square footage or unit type) is not modeled here.
- The reserve fund contribution follows the CAI (Community Associations Institute) recommendation of funding 70–100% of the reserve study's required annual contribution.
- A contingency buffer of 10% is the industry standard to cover unexpected expenses; adjust as needed per your reserve study.
- Non-fee income may include laundry revenue, parking fees, late fees, and interest on reserves — reducing the fee burden on owners.
- Special assessments are one-time or irregular charges spread over 12 months for simplicity; actual billing schedules may differ.
- This calculator does not account for delinquency rates. The CAI recommends budgeting for a 5–10% delinquency reserve in high-risk communities.
- References: CAI Best Practices for Reserve Studies; Davis-Stirling Common Interest Development Act (California Civil Code §5550 for reserve funding); GAAP for Common Interest Realty Associations (AICPA).