HOA Reserve Funds: Studies, Funding, and the Standards That Apply

A poorly funded reserve is the most common reason an HOA hits its owners with a five-figure special assessment they didn't see coming. It is also the most preventable, because the standards and the math are public, established, and well-tested.

What a reserve study is — under CAI's national standard

The Community Associations Institute (CAI) publishes National Reserve Study Standards, last meaningfully revised in 2023. The standards define three required components for any reserve study performed for a community association:

Physical analysis. The component inventory (every major capital asset the association is responsible for replacing or major-repairing) with current condition, remaining useful life, and expected replacement cost.
Financial analysis. The current reserve balance and the projected funding scenarios over 20–30 years.
Funding plan. A recommended contribution schedule that meets the association's funding objective.

CAI defines four levels of service for a study:

Level I — Full study with site inspection. All three components from scratch. Required on first engagement and recommended every three to five years.
Level II — Update with site inspection. Refreshes the financial analysis and verifies the inventory on site.
Level III — Update without site inspection. Refreshes the financial analysis only.
Level IV — Internal update. Performed by the association, not a credentialed reserve specialist; not a substitute for a Level I/II in any state that requires one.

CAI credentials a Reserve Specialist (RS) designation. Major firms include Association Reserves, Reserve Advisors, Miller-Dodson, and Browning Reserve Group; the designation is what matters, not the firm.

The percent-funded benchmarks

Percent funded = current reserve balance ÷ fully funded balance, where fully funded means the dollar amount that would be in reserves if the association had been collecting from day one based on each component's age and life. The conventional bands used in CAI literature and by every major reserve firm are:

Below 30% funded — "weak"; high probability of special assessment within the study period.
30–70% funded — "fair"; the most common band; manageable with disciplined contributions.
Above 70% funded — "strong"; lowest probability of special assessment.

"Percent funded" is not "percent of next big project saved." The latter is what most non-specialist boards think they are looking at, which is why a community can be 60% funded and still get surprised by a roof replacement.

State reserve-study requirements

California — Civ. Code § 5550 requires a Level I study every three years, with a Level II or III in the intervening years (a "reserve study review" each year). § 5570 requires an annual reserve disclosure to owners.
Florida — For condominiums under Chapter 718 (not HOAs under 720), SB 4-D (2022) and SB 154 (2023) require a structural integrity reserve study (SIRS) and ban waiving of reserves for the components in the SIRS, effective for budgets adopted on or after December 31, 2024.
Nevada — NRS 116.31152 requires a reserve study every five years and an annual budget that adequately funds reserves.
Hawaii, Utah, Virginia, Washington and several others require periodic reserve studies by statute for HOAs.
Texas, Georgia, the Carolinas and most other states have no statutory reserve-study requirement — but CC&Rs frequently impose one.

Funding the reserve — three IRS questions you have to answer

Reserve dollars are money the association collects but doesn't spend the same year. The IRS treats them in two different ways depending on the election the board makes:

IRS Form 1120-H (Homeowners Association Election under IRC § 528). Available to associations meeting 60%/90% income tests. Tax is a flat 30% on non-exempt function income only; assessments earmarked for reserves are exempt function income and are not taxed. This is the simpler election and what most HOAs file.
IRS Form 1120 (regular corporate). Used when 1120-H is unavailable or disadvantageous. Excess assessment income can be problematic at year-end.
IRS Revenue Ruling 70-604. For associations filing Form 1120, this ruling allows the association to elect — by membership vote, before year-end — to either refund the excess to members or apply it to the next year's assessments, avoiding taxation as profit. The election must be made annually. This is a specific procedural step many self-managed boards miss.

If your prior years have used 1120 and you have not been making the 70-604 election by membership vote each year, talk to a CPA experienced with community associations. The correction process is involved but well established.

Where to actually hold the money

Reserve assets are not a place to chase yield. Standard practice:

FDIC-insured deposit accounts, each at or below the $250,000 insurance limit per institution. For larger reserves, ladder across multiple FDIC-insured banks or use a Cash Management Account that distributes (ICS / CDARS networks do this).
Laddered certificates of deposit timed to anticipated capital outflows.
U.S. Treasury bills and notes through TreasuryDirect or a brokerage; backed by the full faith and credit of the U.S. government.
Money-market deposit accounts (FDIC) — not money-market mutual funds, unless your investment policy specifically permits the additional credit risk. Recheck your CC&Rs and any state investment standard (California Civ. Code § 5380 governs HOA fiduciary investment).

Two checks and dual signatures on reserve withdrawals above a stated threshold (commonly $5,000) is a baseline internal control recommended by CAI's Best Practices: Financial Operations.

Common failure patterns

Treating the reserve as the "rainy-day fund." Reserves are for the scheduled replacement of capital components, not for unexpected operating expenses. Use a separate operating contingency.
Letting the study go stale. A study more than five years old loses material accuracy as construction costs change. Reserve specialists in 2022–2024 saw 25–40% replacement-cost inflation on roofs, asphalt, and pool decking — communities working from 2019 studies under-funded materially.
"Underfund now, special-assess later." Mathematically defensible only if the board can show the membership the math and obtain political consent. Otherwise the board that sets the under-funding is rarely the board that gets recalled when the special assessment lands.
Borrowing from reserves to cover operating shortfalls. Permitted in most states with disclosure and a written repayment plan (Cal. Civ. Code § 5515 governs this in California). Done quietly, it's a fiduciary breach.

References

Community Associations Institute, National Reserve Study Standards (current revision).
IRC § 528 and IRS Form 1120-H instructions.
IRS Revenue Ruling 70-604.
California Civil Code §§ 5300, 5380, 5515, 5550, 5570.
Florida Statutes Chapter 718 (Condominium Act, SIRS as amended by SB 4-D and SB 154).
Nevada Revised Statutes § 116.31152.
Community Associations Institute, Best Practices: Reserve Studies and Management.

Not tax or legal advice. Consult a CPA with HOA experience and the association's counsel for jurisdiction-specific guidance.