Underfunded HOA Reserves: What Happens and How to Fix It

When underfunded HOA reserves can’t pay for a big repair, the board has to raise a special assessment or borrow. Buyers can also have trouble getting a mortgage, because Fannie Mae makes a condo project ineligible when it has unfunded critical repairs over $10,000 per unit.

Florida condos that must have a structural integrity reserve study (SIRS) can’t waive SIRS-item reserves, and California adds a minimum funding level from 2032. The fix is a funding plan that raises reserve contributions over time.

What Happens When Underfunded HOA Reserves Run Short

An association with inadequate reserve cash faces several direct consequences when major common elements reach the end of their useful life:

• Sudden special assessments: A special assessment is a one-time charge on owners on top of regular dues. Whether the board can levy a special assessment without an owner vote, and how large that assessment can be, depends on state law and the community’s governing documents. Learn more about how these charges work in our guide to the HOA special assessment.
• Borrowing: The other way to pay is to borrow. Whether the board needs an owner vote depends on state law and the governing documents. Moving money out of reserves is a separate question, covered in borrowing from HOA reserves.
• Mortgage approval denials for buyers: Mortgage lenders review association finances before approving home purchases or refinances. Under Fannie Mae’s Selling Guide, the lender must confirm the HOA budget puts at least 10 percent toward reserves; a project that falls short needs a qualifying reserve study instead.
• Project ineligibility from unfunded repairs: Under Fannie Mae Selling Guide B4-2.1-03, unfunded repairs exceeding $10,000 per unit that should be completed within 12 months are classified as critical repairs. These unfunded repairs make the entire project ineligible for Fannie Mae financing. If the association passes a special assessment for an unremediated critical repair, the project also remains ineligible.
• State funding rules: Florida condos required to have a SIRS can’t waive or reduce SIRS-item reserves for budgets adopted on or after December 31, 2024, and California will require a minimum reserve contribution starting January 1, 2032.

How to Identify Underfunded HOA Reserves

To evaluate whether an association has underfunded HOA reserves, boards and owners review three primary financial yardsticks: the fully funded balance, the percent funded ratio, and lender budget allocations.

The starting point is the fully funded balance (FFB): what reserves would hold if each component had been saved for in step with how much of its life is used up.

To calculate the fully funded balance for a single component:

Fully funded balance = current replacement cost × (effective age ÷ useful life)

Effective age equals the useful life minus the remaining useful life. For example, the Community Associations Institute (CAI) gives the case of a $10,000 component with a 10-year useful life and an effective age of 4 years. The fully funded balance for that component is $4,000. Summing the calculated balance of every component yields the association’s total fully funded balance. Learn more about lifespans in our guide on reserve study components and their useful lives.

Once the fully funded balance is known, the reserve study calculates percent funded:

Percent funded = reserve cash balance ÷ fully funded balance

This ratio is measured at a stated start or end of the fiscal year. CAI notes that percent funded is not by itself a measure of adequacy. Robert Nordlund of the reserve-study firm Association Reserves commonly uses three bands:

Percent funded	Association Reserves’ label
70% and above	Strong
30% to 70%	Fair
0% to 30%	Weak (high risk of special assessments)

For a complete breakdown of this calculation, see our guide on HOA reserve percent funded.

Beyond the reserve study balance, mortgage lenders enforce their own contribution tests. Under Fannie Mae Selling Guide B4-2.2-01 (Full Review Process, dated August 5, 2026), lenders must confirm that the association’s annual operating budget provides for the funding of replacement reserves for capital expenditures and deferred maintenance of at least 10 percent of the budget. Lenders calculate this by dividing the annual budgeted reserve allocation by the annual budgeted assessment income.

Lenders may leave these kinds of income out of the calculation:

• Incidental income
• Utility pass-through income, such as bulk cable or internet fees
• Income allocated directly to reserves
• Special assessment income

Under Fannie Mae Lender Letter LL-2026-03, issued March 18, 2026, this minimum allocation increases from 10 percent to 15 percent of annual budgeted assessment income for Full Review loan applications dated on or after January 4, 2027. Review our detailed overview of Fannie Mae condo reserve requirements for more background.

Lenders also check assessment collection rates. Under Selling Guide B4-2.2-01, no more than 15 percent of total units may be 60 or more days delinquent on their common expense assessments.

State Laws Governing HOA Reserve Shortfalls

Florida and California both set reserve rules that limit underfunding. Rules in other states depend on state law and the governing documents.

Florida Reserve Requirements

Florida law imposes specific reserve requirements for condominium associations. Under Florida Statutes §718.112(2)(f), for budgets adopted on or after December 31, 2024, a unit-owner-controlled condominium association required to have a Structural Integrity Reserve Study (SIRS) cannot waive or reduce reserves for SIRS items.

There are narrow exceptions, such as a temporary pause or reduction for up to two budgets adopted on or before December 31, 2028, following a milestone inspection. Outside those limited exceptions, SIRS-item reserves can’t be waived or reduced. Reserves for SIRS components may only be pooled with other SIRS components.

Reserves for non-SIRS items, such as roads, may still be waived or reduced by a vote of a majority of the total voting interests. For detailed coverage of these mandates, consult our guides on structural integrity reserve study, Florida reserve requirements, and Florida condo laws 2026.

Homeowners associations governed under Florida Statutes Chapter 720 operate under different standards. Under §720.303(6), reserves for Chapter 720 HOAs remain optional. Reserves become mandatory only after approval by a majority of the total voting interests. Once established, members can vote to waive or reduce funding one year at a time. The SIRS requirement does not apply to Chapter 720 HOAs. However, if an HOA does not maintain fully funded reserves, its financial report must include a conspicuous disclosure statement.

California Reserve Requirements

On September 29, 2026, California signed Assembly Bill 2050 (Chapter 796, Statutes of 2026).

Starting January 1, 2032, an association’s reserve study must calculate a minimum reserve contribution level that prevents the projected reserve balance from falling below zero dollars at any point over a 30-year projection window. A new statutory provision, Civil Code §5552, will require associations to fund reserves at or above that minimum contribution level. Review our guide to California HOA reserve requirements and broader HOA reserve requirements by state.

How Boards Fix Underfunded HOA Reserves

Boards fix underfunded reserves in four steps over several budgets:

1. Commission a Professional Reserve Study

The board can’t fix underfunding without knowing what its components will cost to replace, and when. A full study inventories the components on site, assesses their condition, and estimates each component’s remaining life and replacement cost.

CAI defines four formal levels of reserve study service:

• Level I: Full Study. The first full study. It includes an on-site inventory, condition assessment, life and cost estimates, fund status evaluation, and a written 30-year funding plan.
• Level II: Update with Site Visit. An update that includes a site visit.
• Level III: Update without Site Visit. An update done without a site visit.
• Level IV: Preliminary Study. Used for communities that are planned but not yet fully built.

CAI best practices recommend completing an update with an on-site inspection at least every third year. Under CAI’s 2023 National Reserve Study Standards, a compliant study must include a financial plan projecting reserve income and expenses over at least 30 years (an increase from the 20-year projection required under the prior 2016 standard). Find qualified providers through our directory of the best HOA reserve study companies or read our guide on how to do a reserve study.

2. Choose a Funding Goal

CAI identifies three primary reserve funding goals:

• Full funding: Targets a reserve balance at or near 100 percent of the fully funded balance. CAI calls this the most conservative goal.
• Threshold funding: Sets a specific dollar minimum or percent-funded floor throughout the 30-year window.
• Baseline funding: Sets annual contributions so the projected cash balance stays just above zero dollars. CAI calls baseline the highest-risk goal and says it is “not recommended as a long-term solution.”

Fannie Mae has also stopped accepting baseline funding: under Lender Letter LL-2026-03, lenders are no longer permitted to use the baseline funding method for applications dated on or after August 3, 2026.

If your board wants to run these numbers itself, The HOA Guide’s Reserve Study Builder ($99) lists your components and works out your percent funded and a 30-year plan. It also gives the fully funded balance and baseline, threshold and full funding plans with the monthly amount per unit, as PDF and Excel. Note that a self-prepared plan is not a professional reserve study and does not satisfy state laws that require a professional preparer, Florida SIRS mandates, or Fannie Mae reserve study criteria.

Boards can also explore our free HOA reserve fund calculator or download a free HOA reserve study template.

3. Implement Gradual Assessment Increases

Instead of closing the gap in one year, boards can phase in higher reserve contributions through the annual budget.

A board should model reserve contributions across a multi-year trajectory. A funding plan spreads the increase over several budgets, so contributions rise a step each year until they reach the plan’s target. For step-by-step budgeting practices, read how to create an HOA budget and review HOA reserve fund accounting.

For where reserve money can be held, see can an HOA invest reserve funds.

4. Meeting the Fannie Mae Reserve Study Exception

An association with underfunded HOA reserves that does not allocate 10 percent (or 15 percent starting January 4, 2027) of its budget to reserves may still qualify for Fannie Mae financing if it satisfies the reserve study exception under Selling Guide B4-2.2-01.

To use a reserve study instead of the flat percentage test, all of the following conditions must be met:

• The lender must retain a copy of the reserve study in the loan project file.
• Current funded reserves must meet or exceed the study’s recommendations.
• The association’s current annual budget must include the study’s highest recommended reserve allocation.
• The reserve study must satisfy all Fannie Mae criteria and applicable state laws.
• The study must have been completed within three years of the date the lender approves the project.
• The study must be prepared by an independent third party with specific expertise in completing reserve studies, such as a credentialed reserve professional, a construction engineer, or a certified public accountant specializing in reserve studies.

A board-prepared study never qualifies for the Fannie Mae exception. Review the broader project guidelines in our guide to Fannie Mae condo approval.

What Owners and Buyers Can Check

Owners worried about future assessments and buyers evaluating a property should check three association documents before closing:

1. The reserve study executive summary: Look at the date of the report, the percent funded ratio, and whether the study recommends a site inspection. Confirm whether the study followed a Level I, II, or III service level.
2. The current operating budget: Check the line item for replacement reserve contributions. Divide the annual reserve allocation by the total annual budgeted assessment income to verify whether the association meets the 10 percent (or upcoming 15 percent) lender benchmark.
3. The balance sheet and delinquency schedule: Review the total cash held in dedicated reserve bank accounts. Check that no more than 15 percent of units are 60 or more days behind on assessments, which is one of Fannie Mae’s Full Review tests.

For a broader breakdown of common reserve targets, visit how much should an HOA have in reserves and see what HOA reserve funds are used for.

Bottom Line

Underfunded HOA reserves leave owners facing special assessments or association borrowing, and can make it harder for buyers to get a loan Fannie Mae will buy. The way out is a funding plan covering at least 30 years that raises reserve contributions over time.

Start with the latest reserve study and this year’s budget, and compare the percent funded and the reserve line with the tests above.

This page is general information and is not legal advice. For questions about your governing documents or your state’s laws, speak with a licensed attorney in your state.