The Quick Read: Reserves are the cash and liquid assets you still hold after closing, counted in months of the property’s monthly payment. Four things set the number: how you will occupy the property, how many units it has, how many other mortgaged properties you own, and what the automated underwriting system finds. Rent can help you qualify on income. It never counts as reserves.
Key Takeaways
- Reserves are separate from your down payment and closing costs. They are what is left afterward.
- A one-unit home you live in usually needs no minimum reserves. A 2-4 unit home you live in usually does.
- Owning other financed properties can add reserves, but only when the new loan is for an investment property or second home.
- Rent from the property helps your income side of the file. It does not replace verified assets.
- The automated underwriting findings can ask for more than the baseline.
What Are Reserves, and What Are They Not?
Reserves are liquid money you still have once the deal closes. Lenders measure them in months of the property’s monthly housing payment: principal, interest, taxes and insurance, plus any association dues.
Conventional payment estimate
The starting figures are an example price at the first-time buyer’s minimum down payment. Replace them with yours.
Editable benchmark: 7.32% as of October 22, 2026 · Freddie Mac 30-year average via FRED®. A conventional market reference, not a conventional loan quote.
Estimate seeded at the low end of Fannie Mae’s published range (0.58%–1.86% a year); the insurer prices the actual premium on the score and the leverage. Applies only above 80% loan-to-value.
Illustrative starting assumptions: a $350,000 price, the first-time buyer’s minimum down payment, a thirty-year term at the current Freddie Mac benchmark, mortgage insurance at the low end of Fannie Mae’s published range, and property taxes and insurance estimated at typical national rates. Every field is editable.
Illustrative estimate only — not a Loan Estimate, approval, quote, or commitment to lend. The rate field carries the weekly Freddie Mac thirty-year conventional benchmark, a market reference and not a conventional loan quote; your rate is set by the lender at lock. The mortgage insurance figure is an editable estimate seeded from Fannie Mae’s published typical range, not a premium quote; the insurer prices the actual premium, and the cancellation month assumes scheduled payments with no extra principal and no change in value. Taxes, insurance and dues are editable estimates; closing costs are not included. Conforming loan limits apply by county. Licensed in sixteen states for consumer mortgages.
They are not a fee. Nobody collects them at the table. They sit in your accounts, and the lender checks that they exist.
Here is how the cash picture stacks up:
- Down payment: your share of the purchase price.
- Closing costs: the one-time costs of the loan and the transaction.
- Reserves: what remains in verified accounts after both.
The order matters. A buyer who has enough for the down payment and closing costs can still come up short on the third line. Reserves have to remain after the first two are paid.
Income and credit look fine, then the asset statements show the cash is already spoken for. Lendmire is a mortgage broker licensed for consumer lending in 16 states, and a good share of its conversations with multi-unit buyers about conventional loan programs start with that exact gap.
How Is the Reserve Requirement Underwritten, Step by Step?
Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
The lender decides the reserve number in a set order. Each step narrows the answer.
1. Classify the deal. Will you live in one unit of a 2-4 unit building, or is the building a non-owner-occupied rental? Occupancy sets the baseline months.
2. Run automated underwriting. The system returns its findings, including the reserve months. Its overall risk read can add reserves beyond the baseline.
3. Build the payment base. Reserves are months of the subject property’s monthly housing payment. A bigger building means a bigger payment, so the same months cost more cash.
4. Test rental income separately. Rent is an income question. It has its own rules and its own documents.
5. Order the appraisal. A 2-4 unit loan generally uses the small residential income appraisal, which also supports the rent figure.
6. Verify the assets. The lender collects recent statements. For retirement accounts it looks for the vested amount.
7. Add reserves for other financed properties. This applies only if the new loan is an investment or second-home loan and you own other mortgaged property.
What decides the outcome comes down to five items: occupancy, unit count, the number and balances of your other financed properties, the automated findings, and whether your assets are liquid, vested and documented.
What Is the Baseline for the Subject Property?
The baseline depends on occupancy and unit count. The table below shows how leverage and reserves move together for a purchase. Leverage figures reflect the conventional programs Lendmire works with, and reserve figures reflect agency guide language.
| Scenario | Max purchase LTV | Baseline reserves |
|---|---|---|
| 1-unit, you live there | 95% (97% first-time) | No minimum |
| 2-4 unit, you live in one | 95% | Required (six months, manual) |
| Second home | 90% | Set by findings |
| Investment, 1 unit | 85% | Required, set by findings |
| Investment, 2-4 units | 75% | Required, set by findings |
LTV means loan-to-value: the loan as a share of the home’s price or appraised value. The 97% figure applies to a one-unit principal residence with a fixed rate when at least one borrower is a first-time buyer. Everything here is subject to lender guidelines and full file review.
Two agency rules sit behind the reserve column. The Fannie Mae Selling Guide on minimum reserve requirements applies reserves to a two- to four-unit principal residence and to an investment property. It says there is no minimum reserve requirement for one-unit principal residence transactions. It also says the minimums vary by transaction type, occupancy, number of units and the number of other financed properties you own. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.
On the Freddie Mac side, Section 5501.2 of its guide measures reserves in months of the property’s payment. For manually underwritten loans, a one-unit primary residence needs none. A two- to four-unit primary residence needs six months for the subject property. Loans run through Freddie’s automated system take their reserve amount from the findings, so the number on your file can differ from the manual baseline.
Fannie Mae’s manual-underwriting minimums live in its Eligibility Matrix, not in the guide page alone. Treat the baseline as a floor, not a promise.
Why Does Unit Count Change the Dollars?
The months rule is flat, but the payment it multiplies is not. A fourplex carries a bigger loan and bigger taxes and insurance than a duplex. Six months of that payment takes a lot more cash than six months of a smaller one.
Picture two buyers, both planning to live in one unit. One buys a duplex and the other buys a fourplex. Both face the same months-of-payment baseline. The fourplex buyer’s reserve target is simply a larger number, because the payment under it is larger.
This is why a multi-unit buyer can qualify comfortably on income and still stall at the asset review. The income test and the cash test are different tests. Qualifying on one tells you nothing about the other.
A practical habit helps here. Before you write an offer, estimate the full payment on the building, including taxes and insurance. Multiply it by the months you expect to need. Then check that figure against what will be left after your down payment and closing costs. If it does not fit, you have three levers: a smaller purchase price, a bigger cash cushion, or a different structure.
How Do Other Financed Properties Add to Reserves?
Other mortgaged properties can raise your reserves, but only when the new loan is an investment property or second home. If you are buying a home to live in, this extra test does not apply.
When it does apply, Fannie Mae adds a percentage of the unpaid balances on your other financed properties. Those balances include mortgages and home equity lines. The same guide section sets the tiers:
| Other financed properties | Added reserves (share of balances) |
|---|---|
| One to four | 2% |
| Five to six | 4% |
| Seven to ten | 6% (automated only) |
The method is a share of balances, not extra months of payments. That difference trips up plenty of explainers online, and it is worth getting right before you plan your cash.
The count leaves out some properties. It does not include:
- the property you are buying,
- your principal residence,
- properties that are sold or pending sale,
- accounts that will be paid off by closing.
Run the logic on a hypothetical. Say you own two mortgaged rentals and now buy a third building as an investment. You add 2% of the combined unpaid balances on the two existing loans to the subject property’s reserve target. Then you check that total against your verified assets. Now change the story: you buy a duplex to live in and keep the same two rentals. The extra test does not apply, and only the subject property’s baseline matters.
What Counts as a Reserve Asset?
Verified, liquid or vested assets count. Your lender needs statements, not promises. The Fannie Mae guide lists these as acceptable:
- stocks, bonds, mutual funds, CDs, money market funds and trust accounts
- the vested amount in a retirement account
- the cash value of a vested life insurance policy
Retirement money trips people up. For reserves, the vested balance needs to be verified, not cashed out. Funds you cannot touch until retirement or termination do not count. Fannie Mae’s FAQ on retirement assets adds that the lender must confirm ownership and that the funds are vested and withdrawable regardless of employment status. Unvested stock options do not count either.
Some money is off the list entirely:
- Seller credits and other interested-party contributions. The same FAQ says these cannot be used to meet reserve requirements.
- Home equity. Equity in real estate is not on the acceptable-asset list.
- Rent from the new building. Rent is an income idea. Reserves are assets that remain after closing. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.
How Does Rental Income Fit In?
Rental income and reserves are two separate tests. Rent can improve your income side. It does not shrink the asset check.
Lenders usually count a reduced share of rent, to allow for vacancy and upkeep. Fannie Mae accepts rental income when it is likely to continue. How much you can use may depend on whether you have a current housing payment and a property management history.
A few documentation points matter for a 1-4 unit buyer:
- For a 2-4 unit principal residence and any investment property, the lender reports the gross monthly rent on the subject property. That happens even when you are not using the rent to qualify.
- The appraisal or rent schedule supporting the rent figure cannot be dated 12 months or more before the note date.
- On a 2-4 unit home you live in, Freddie Mac counts rent only from the units you do not occupy.
- On an investment property, a positive net rental result goes to income and a negative result goes to your liabilities.
One housekeeping note. Fannie Mae has moved its rental income section to B3-3.8 as part of a simplified income assessment. Many websites still cite the older section number, so a stale reference is a clue that a page is out of date.
Where Does the General Rule Break?
Most buyers fit the table above. A few situations bend it.
Home Possible. Freddie Mac’s Home Possible fact sheet shows two months of reserves for manually underwritten two- to four-unit loans. The automated system sets the minimum on other loans. That is a program-specific exception, not Freddie’s general rule. The program also carries an income limit of 80% of area median income.
Automated findings above the baseline. Fannie says its automated risk assessment may require additional reserves. A stated minimum and your actual requirement can differ. Wait for the findings before you plan your cash.
Accessory dwelling units. Fannie Mae now allows rent from one accessory dwelling unit on a one-unit principal residence, for purchase and limited cash-out refinance. Freddie covers ADU income under its rental income section. Neither one turns your home into a 2-4 unit property, so the 2-4 unit reserve rule does not follow.
Fannie and Freddie are not twins. They differ on automated findings, program carve-outs and rental treatment. A rule you read for one does not transfer to the other. Your lender picks the path that fits your file.
Leverage and reserves are separate dials. Each occupancy and unit count has its own maximum LTV, and reserves are one condition among several. A buyer can meet the leverage limit and still fall short on cash.
What If You Are Short on Reserves?
A shortfall is a planning problem, not always a dead end. Several fixes exist, and each has a tradeoff.
- Lower the price. A smaller building means a smaller payment base and a smaller reserve target.
- Put more cash on the asset side. A smaller down payment keeps more money in reserve, though it raises the loan and may add mortgage insurance. Mortgage insurance is required above 80% LTV. You can ask to cancel it at 80% of the original value, and the servicer must end it automatically at 78%.
- Document more of what you own. Vested retirement balances, brokerage accounts and vested policy values may count if they are verified.
- Reconsider the occupancy plan. A 2-4 unit home you live in carries different leverage and reserve treatment than a pure rental. Occupancy has to be real, though.
- Look at the program. Some programs carry lower reserve rules on manual files. The tradeoffs in income limits and eligibility are worth a conversation. These specifics are subject to lender guidelines and a full review of property, leverage, and credit.
One mistake shows up often: counting the same dollar twice. Money used for the down payment cannot also be a reserve. Take the closing figure first, subtract it, and see what remains.
Key Terms Defined
Reserves: liquid or vested assets that remain after closing, counted in months of the property’s monthly payment.
LTV (loan-to-value): the loan amount as a percentage of the property’s price or appraised value.
Automated underwriting: software, called DU at Fannie Mae and LPA at Freddie Mac, that reviews your file and returns findings, including reserve months.
Financed property: a property with a mortgage or home equity line against it, which can count toward the extra-reserve test.
Vested: money you own outright and can withdraw, as opposed to funds still tied to employment or a waiting period.
Interested party contribution: a credit from someone with a stake in the sale, such as the seller, which cannot be used to meet reserves.
Gross rent: the full monthly rent before any reduction for vacancy and upkeep.
Frequently Asked Questions
Do I need reserves if I live in one unit of a duplex?
Usually yes. A two- to four-unit principal residence carries a reserve minimum under the agency provisions cited above, unlike a one-unit home you live in. Freddie Mac’s manual baseline is six months for the subject property. Automated findings can set a different number, so wait for them before you plan your cash.
Does rent from the building count toward my reserves?
No. Rent is income and reserves are verified assets left after closing. Lenders may count a reduced share of rent to help you qualify, but that does not reduce the reserve requirement or stand in for it. Terms depend on the lender’s guidelines, the property type, the leverage, and a full review of the credit profile.
Can my 401(k) or IRA count?
Often yes, for the vested amount. The lender must verify that the funds are yours, vested and withdrawable. You generally do not have to cash them out to count them as reserves. Funds locked until retirement or termination do not count.
Do my other rental mortgages raise the requirement?
They can, if the new loan is for an investment property or second home. Fannie Mae adds a percentage of the unpaid balances on your other financed properties: 2% for one to four, 4% for five to six, and 6% for seven to ten on automated files.
Can a seller credit or home equity cover the reserves?
No. Interested-party contributions cannot meet reserve requirements, and equity in real estate is not on the acceptable-asset list. Reserves need to be your own verified assets. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
Next Step
Reserves usually decide a multi-unit purchase before price does. If you are buying a home and want to see whether a conventional loan fits your file, Lendmire can help you compare the options and what each one asks of the file. Program details are subject to lender guidelines and full file review, and nothing here is a commitment to lend.
Before you make an offer, run the cash math in order: down payment, closing costs, then reserves on the payment of the building you want. That sequence will tell you what size of building actually fits.
For your own numbers, request a scenario review with Lendmire.
About Lendmire
Lendmire, NMLS# 2371349, is a mortgage brokerage with consumer lending licenses in 16 states. FHA, VA, conventional and jumbo purchase and refinance loans are arranged through wholesale lending partners, and each application is reviewed individually by the lender. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. Fannie Mae Selling Guide B3-4.1-01, Minimum Reserve Requirements
2. Freddie Mac Guide Section 5501.2, Reserves
3. Fannie Mae, Top Trending Selling FAQs
4. Freddie Mac Guide Section 5306.1 Rental Income
5. Fannie Mae, Income Assessment Now Simplified
6. Freddie Mac Home Possible Fact Sheet
This article is part of Lendmire’s conventional loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How a Conventional Loan Counts Reserves for a House Hacker’s 2-4 Unit · How to Get Preapproval for a Conventional Loan as a First-Time Buyer · HomeReady vs Standard Conventional Loan for a Buyer Under Income Limits
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.