Keep vs Sell Your Current Home When Buying With a Conventional Loan

The Quick Read: Keep vs sell your current home comes down to one question: can your file carry two homes at once? On a conventional loan, the old home’s full housing payment counts against you unless the home has sold or has a documented pending sale. Selling is the simpler path to qualify. Keeping works when your income, cash, and reserves absorb the extra payment.

Here is the honest answer on who each option fits. Selling suits buyers who need the equity for the down payment, want the cleanest file, or don’t want to be a landlord. Keeping suits buyers with strong income, real cash left after closing, and a home that would rent well. Neither is better in the abstract. The lender’s math decides how much room you have.

Side-by-Side

Both columns share the same entry terms for the new home. The difference is what the old home does to your debt-to-income ratio (DTI), which is your monthly debts divided by your monthly income. Across the wholesale programs placed through Lendmire, the automated approval finding governs most files, with a total ratio ceiling of 50%. Manually underwritten loans run tighter, at 36% or 45%. All figures are subject to lender guidelines and full file review.

How a Conventional Lender Treats the Old Home

A lender counts the old home’s payment unless the sale is documented. Fannie Mae’s rule in Selling Guide B3-6-06 says that when your current home is pending sale but won’t transfer before you buy, the old payment can still be left out of your qualifying debts, but only with two documents: the executed sales contract and confirmation that any financing contingencies are cleared.

That second item trips people up. An accepted offer is not enough. If the buyer of your home can still walk away over their loan, the lender treats your old payment as live.

The payment in question is PITIA: principal, interest, taxes, insurance, and association dues. It is the full carrying cost, not just the mortgage line.

Freddie Mac builds DTI under Guide Section 5401.2. For manually underwritten loans, a DTI above 45% makes the loan ineligible for sale to Freddie Mac. The lender’s own overlays may be tighter still.

If you want the broader landscape of what these loans ask for, Lendmire’s conventional loan programs page lays out the basics.

When Selling Is the Better Fit

Selling is the better fit when the numbers on two payments don’t work, or when you need the equity to get into the new home. A few situations point this way.

You need the proceeds. Sale money funds the down payment, closing costs, and reserves. Those proceeds generally don’t count as available until they are documented, so the timing of the sale matters. A sale that closes first gives you known cash. A sale that closes after leaves you guessing.

Your ratios are already tight. Stack a second full payment on top of the new one and DTI can jump. A buyer sitting near the 45% mark on a manual review, or well into the automated range, may find the old home pushes the file over.

You are moving far away. Managing a rental from a distance is harder than most buyers expect. Repairs, vacancies, and tenant issues don’t wait for your schedule.

The home wouldn’t rent well. Condition problems, association restrictions, or a thin local rental market all weaken the case for keeping.

You want the cleanest file. A lender looking at a sold home sees no old payment, no rent documentation, and no reserve questions. Fewer moving parts is a real advantage.

There is a middle path: sell, but with a pending sale rather than a closed one. With the executed contract and cleared contingencies, the old payment can come out of your ratios even before the sale closes. If it doesn’t close first, the old mortgage is paid off at the sale closing, and your net proceeds are verified from the settlement statement.

Bridge loans work differently. Fannie Mae’s B3-6-05 treats a bridge loan as a contingent liability counted in your recurring debts. The same executed-contract-plus-cleared-contingency exception can remove it. A home equity line (HELOC) is another way to tap equity before selling. The CFPB explains that a HELOC uses your home as collateral, so you could lose the home if you can’t repay. A secured line also has to be counted in the underwriting.

When Keeping Is the Better Fit

Keeping is the better fit when your income and cash can carry both homes without strain. It also helps when the old home would rent well and you plan to hold it. Think of a buyer with strong income, solid savings after closing, and a home in a steady rental area.

Here is what the lender looks at on the keep route.

The old home’s payment. If it becomes a second home, its full PITIA counts as a monthly debt. If it becomes a rental, Fannie Mae’s new departing-residence topic, B3-3.8-05, allows some rent to offset it. The lender takes 75% of the supported gross rent and subtracts the full PITIA. A positive result can offset that property’s payment. A shortfall goes into your DTI as debt.

How the rent gets proven. Lease agreements are not permitted for a departing residence. The lender needs market-rent evidence instead: an appraisal with market rents, or at least three comparable rentals from a market-analysis tool. A signed lease with your best friend at a generous number proves nothing.

Multi-unit homes. If the old home has more than one unit, the market analysis covers only the unit you lived in. The lender also needs your most recent personal tax return to support rent from tenant-occupied units.

Reserves. Reserves are cash left over after closing, usually counted in months of payments. Rental conversions can trigger extra reserves. Fannie Mae’s SEL-2026-08 rewrote the departing-residence rules around market-supported rents, reserve requirements, and limits on how much rent can offset the payment. Reserve numbers have changed, so have your loan officer confirm the current requirement before you plan around any figure.

The count of financed properties. Fannie Mae’s B2-2-03 counts one- to four-unit properties where you are personally obligated on the mortgage. On a principal-residence loan, it sets no cap on other financed properties. The cap of 10 applies to second homes and investment properties.

Timing matters too. Ask your loan officer which framework applies to your application date.

Edge Cases That Change the Math

A few situations move the old payment off your ratios without a sale.

• Someone else pays the old mortgage. Fannie Mae allows the lender to exclude the payment if the paying party is also obligated on the debt, the payments have been clean for the past year, and you aren’t using that property’s rent as income.
• A buyer assumes the loan. If the lender verifies the person assuming it has a 12-month history of timely payments on that mortgage, the liability can come off your file.
• A second home. A second home’s payment counts as a monthly debt, not a housing expense. Fannie Mae defines it as a home you occupy for some part of the year.

Each of these needs documentation. None is automatic.

The Occupancy Rule You Can’t Skip

Your new home must be a real primary residence. Freddie Mac’s Guide Section 8405.1 documents that the standard conventional security instrument expects you to move in within 60 days of signing. The program figures follow occupancy: 97% leverage for a first-time buyer on a one-unit home, 95% otherwise, 90% on a second home. The numbers get stricter as the occupancy gets less like a home you live in. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.

Fannie Mae has warned lenders about a specific pattern. In its Quality Insider, it describes borrowers who buy a new “subject” home, keep living in the old one, and offer the new one for rent. That is occupancy misrepresentation. Don’t be that file.

A Side-by-Side Scenario

Picture a household buying a one-unit primary residence. They are not first-time buyers, so 95% leverage applies. They own their current home and carry a modest mortgage balance on it. These specifics are subject to lender guidelines and a full review of property, leverage, and credit.

Sell route. They list the old home and accept an offer. The buyer’s financing contingency clears, and the lender holds the executed contract. The old payment drops out of the ratios. Their DTI reflects only the new payment. Net proceeds fund the 5% down payment and reserves. Mortgage insurance applies above 80% LTV. It can be requested off at 80% of the original value, and the servicer must end it automatically at 78%.

Keep route. They keep the old home and rent it. The lender gets market-rent proof, takes 75% of gross rent, and subtracts the full PITIA. Say the rent covers most of it. The shortfall lands in their DTI. The 5% down payment now comes from savings, so their reserves are thinner. If DTI lands near the manual-underwriting ceilings or the 50% automated ceiling, the file gets tight. Terms depend on the lender’s guidelines, the property type, the leverage, and a full review of the credit profile.

Same household, same new home. Different cash and different ratios.

The honest read on this one is a genuine toss-up for many households. Selling gives certainty and cash. Keeping gives a long-term asset and possible income. A buyer with thin reserves should lean toward selling. A buyer with strong cash flow and a good rental can reasonably keep.

Practical Checks Before You Decide

Run through these before you commit either way.

• Estimate what you’d net from a sale, after payoff and selling costs.
• Pull three comparable rentals for the old home, and assume a vacancy gap.
• Add the old home’s full PITIA, plus upkeep, to your monthly picture.
• Count the cash you’d have left after closing on the new home.
• Check your credit decision score against the 620 wholesale floor. Some lenders set a higher floor.
• Decide honestly whether you want to be a landlord.

Tax treatment can depend on your situation; borrowers should speak with a qualified tax professional before relying on any deduction or credit.

Common Mistakes

Many buyers assume a signed offer removes the old payment. It doesn’t, without the cleared contingencies. Others assume all the rent counts. Only 75% does, and the PITIA comes off in full. Some expect a lease to prove the income. For a departing residence, it can’t. And some forget that a HELOC on the old home may restrict renting it out, a point the CFPB’s HELOC booklet raises.

A Balanced Verdict

Sell if you need the equity, your ratios are tight, or you don’t want the landlord job. Keep if your income, reserves, and the home’s rental strength can carry both. In between, a documented pending sale can give you the cleanest of both worlds.

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. For a related comparison, see Lendmire’s piece VA vs Conventional vs FHA Loan for a Veteran Buying a First Home.

Key Terms Defined

PITIA: Principal, interest, taxes, insurance, and association dues, the full monthly cost of owning a home.

DTI: Debt-to-income ratio, your monthly debts divided by your monthly gross income.

Departing residence: The home you are leaving when you buy a new primary residence.

Reserves: Verified cash left after closing, counted in months of housing payments.

Financing contingency: A clause letting a buyer cancel if their loan falls through.

For your own numbers, request a scenario review with Lendmire.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage broker licensed for consumer lending in 16 states. Lendmire arranges FHA, VA, conventional and jumbo purchase and refinance loans through wholesale lenders; every file is underwritten by the lender under the applicable program guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. Fannie Mae Selling Guide B3-6-06

2. Freddie Mac Guide 5401.2

3. B3-6-05

4. CFPB: What is a HELOC

5. Fannie Mae Selling Guide B3-3.8-05

6. Fannie Mae SEL-2026-08

7. B2-2-03

8. Guide Section 8405.1

9. Quality Insider

10. HELOC booklet