---
title: "How to Fund the VA Assumption Gap"
description: "Learn how military buyers can cover the gap between a VA loan assumption balance and the purchase price using TSP loans, HELOCs, second trusts, and seller financing."
url: https://combatproperties.com/how-to-fund-the-va-assumption-gap/
date: 2026-06-28
modified: 2026-06-16
author: "PJ Burns"
image: https://combatproperties.com/wp-content/uploads/2026/06/How-to-Fund-the-VA-Assumption-Gap.png
categories: ["Miscellaneous"]
tags: ["assumable mortgage gap funding", "assumption gap funding options", "fund VA assumption equity gap", "HELOC VA assumption", "military buyer assumption financing", "military home buyer VA assumption", "second trust VA assumption", "TSP loan VA assumption", "VA assumption seller equity", "VA loan assumption gap"]
type: post
lang: en
---

# How to Fund the VA Assumption Gap

Assuming a seller’s VA loan at a rate of 2.5% or 3% can save hundreds of dollars a month compared to today’s market. But there is a cost that catches buyers off guard: the gap between the seller’s remaining loan balance and the actual purchase price.

If the seller owes $400,000 on a home you are buying for $525,000, you must cover $125,000 before or at closing. The assumed loan handles the rest. Understanding what goes into that number, and how to fund it strategically, determines whether the assumption actually makes financial sense. If you are new to how VA assumptions work, our article (https://combatproperties.com/the-va-loan-assumption-a-comprehensive-breakdown/) covers the full process.

## Calculating Your Total Cash Requirement

The gap starts with simple subtraction: purchase price minus remaining loan balance equals the equity you owe the seller. From there, add the VA funding fee, which for assumptions is 0.5% of the assumed loan balance. Unlike a standard VA purchase, this fee cannot be rolled into the loan. It must be paid in cash at closing, unless the seller agrees to cover it through concessions.

Also add estimated closing costs (title, settlement, assumption processing fees), prepaid expenses (homeowners insurance, prepaid interest), and escrow reserves. Then subtract any seller credits. The result is your actual cash requirement at the table.

Using the example above: $125,000 equity gap + $2,000 funding fee + approximately $10,000 in closing costs, less a $3,000 seller credit, equals roughly $134,000 needed at closing.

***Note: ****Funding fee rates, closing costs, and seller credit availability vary by transaction. Confirm all figures with the assuming servicer and your title company before committing.*

## Your Funding Options for the Gap

**Cash savings and home sale proceeds.** If you are selling a prior home, equity from that sale can fund the gap with no new debt, no added monthly payment, and no DTI impact. This is the cleanest path available.

**Family gifts.** Gifts are generally allowed if properly documented and sourced in writing. Do not move gift funds before getting servicer approval, as doing so can create sourcing complications that are difficult to resolve later in the process. Ask the servicer upfront how to properly document and time the receipt of gift funds, and follow their instructions before any money changes hands.

**TSP loans.** The (https://www.tsp.gov/tsp-loans/) allows active-duty service members to borrow against their own account balance. The maximum loan amount is the lesser of $50,000 (reduced by any outstanding TSP loan balance from the prior 12 months) or 50% of your vested account balance, with a minimum of $10,000 if 50% of your balance falls below that threshold. General purpose loans must be repaid within five years via payroll deduction; residential loans allow up to 15 years. The rate is tied to the G Fund, which was 4.25% to 4.5% in early to mid 2026.

One feature worth understanding: the interest you pay on a TSP loan goes back into your own TSP account. You are paying interest to yourself rather than to a lender. That said, the funds you borrow are no longer invested in your chosen TSP funds during the loan period, so you give up any market growth on that portion while the loan is outstanding. A TSP loan does not appear on your credit report, but the monthly payroll deduction counts in your DTI when the servicer qualifies you. If you separate from service with a balance outstanding, the remaining amount may become a taxable distribution with a potential 10% early withdrawal penalty.

***Note: ****TSP loan rates reset monthly to the G Fund rate. Borrowing limits depend on your vested account balance and outstanding loan history. Verify current figures at tsp.gov before applying.*

**HELOCs and home equity loans on prior properties.** Service members who retained a home after a PCS move may be able to draw on that equity. Investment property HELOCs typically require a 680+ credit score, 20% or more remaining equity, and a combined loan-to-value at or below 75% to 80%. Rates average around 7% or higher for non-primary residences. Most HELOCs are tied to the prime rate, which is a benchmark set by major U.S. banks that moves in step with the Federal Reserve’s federal funds rate. When the Fed raises rates, prime goes up, and your HELOC payment rises with it. The monthly payment counts in your DTI qualification.

**Second trusts.** (https://www.benefits.va.gov/HOMELOANS/documents/circulars/26-24-17.pdf) explicitly permits secondary financing on VA assumptions. A second-position lender funds the gap, executes a subordination agreement behind the assumed first lien, and the buyer repays both loans. The servicer must approve the arrangement, both payments must fit within your DTI, and proceeds can only cover the seller’s equity and allowable closing costs.

Most second trust lenders cap combined loan-to-value at 89.99% of the appraised value. On a $525,000 home, that limits total debt (assumed first plus second trust) to approximately $472,000. With a $400,000 assumed balance, the second trust cannot exceed roughly $72,000 before hitting the CLTV ceiling. Any remaining gap above that limit must be covered with cash or another source.

**Seller financing.** The seller can carry a note for all or part of the equity. Terms are negotiable, but the servicer must still approve, the note must be formally documented, and Virginia state law governs enforceability, disclosures, and foreclosure rights. This works best when the seller does not need their full equity at closing.

**Personal loans.** Unsecured loans are available but typically carry rates of 8% to 12% or higher and add directly to DTI. All new debt opened before underwriting must be disclosed. Undisclosed liens or new accounts can cause assumption denial. Use sparingly and confirm timing with the assuming servicer.

## Gap Funding Scenarios: Side-by-Side Comparison

The table below compares four ways to fund the gap on a $525,000 purchase with a $400,000 assumed VA loan balance. All figures are illustrative. The second trust scenario reflects the 89.99% CLTV ceiling described above.

|   | **Cash Only** | **TSP Loan + Cash** | **HELOC + Cash** | **Second Trust + Cash** |
| --- | --- | --- | --- | --- |
| **Equity Gap** | $125,000 | $125,000 | $125,000 | $125,000 |
| **VA Funding Fee (0.5%)** | $2,000 | $2,000 | $2,000 | $2,000 |
| **Est. Closing Costs** | $10,000 | $10,000 | $10,000 | $10,000 |
| **Seller Credit** | ($3,000) | ($3,000) | ($3,000) | ($3,000) |
| **Total Cash Needed at Closing** | ~$134,000 | ~$134,000 | ~$134,000 | ~$134,000 |
| **Gap Funding Source** | Savings / home sale proceeds | $50K TSP + $84K cash | $80K HELOC + $54K cash | $72K 2nd trust + $62K cash |
| **Rate on Gap Funds** | N/A (cash) | ~4.25-4.5% | ~7%+ variable | 9.5%+ |
| **Est. New Monthly Payment** | None | ~$930/mo (5-yr) | ~$467/mo (int.-only) | ~$932/mo (10-yr, 9.5%) |
| **DTI Impact** | None | Yes | Yes | Yes |

***Note: ****TSP payment estimate assumes $50,000 at 4.5% over 60 months (~$930/mo). HELOC estimate assumes $80,000 at 7% interest-only (~$467/mo). Second trust capped at ~$72,000 based on 89.99% CLTV on a $525,000 appraised value with a $400,000 assumed first. Closing costs, seller credits, and second trust terms vary by transaction. Confirm all figures with your servicer, lender, and title company.*

## Tradeoffs Worth Thinking Through

**Liquidity after closing.** Depleting savings to cover the gap leaves no buffer for repairs, emergencies, or a gap in BAH during a PCS transition. Closing with sufficient reserves is part of the plan, not a bonus.

**Retirement savings impact.** Borrowing from your TSP removes that capital from years of compounding. The interest you pay goes back into your own account, but the funds are no longer growing in your chosen investment funds during the loan period. The true cost is the market growth you forgo, which is not always visible on a spreadsheet.

**Break-even timeline.** Rate savings only materialize if you stay long enough to offset upfront costs. But the timeline does not have to end when you move out. Buyers who plan to retain the property as a rental after a future PCS move gain additional runway. Once the second trust is paid off, the property carries only the low assumed first-mortgage rate, which strengthens its cash-flow potential as a rental. A low assumed rate held long enough can become a real advantage for a long-term hold.

## Putting It All Together

The assumption with gap financing is not a simple yes or no decision. It is a math problem with multiple variables: the gap amount, the cost and structure of gap financing, your expected hold time, your liquidity after closing, and the rate you would get on a new VA loan for the same property.

The tool that pulls these together into one comparable number is the blended rate, a weighted average of what every source of funds actually costs you. A companion article on (https://combatproperties.com/va-loan-assumption-blended-rate) walks through the formula with worked examples using a second trust, a TSP loan, and a HELOC, so you can compare your true financing cost against a new VA loan before committing.

For a full comparison of VA loan products and other financing options available to military buyers, see (https://combatproperties.com/loan-options-for-military-buyers/).

If you are evaluating a VA assumption and want to work through the numbers for your specific situation, reach out at pjburns@combatproperties.com.

*This article is provided for educational purposes only and does not constitute legal, tax, financial, or lending advice. Real estate rules, rates, loan requirements, and market conditions vary by situation, location, and loan type. Before making any real estate decision, consult a licensed attorney, CPA, lender, or other qualified professional.*