LTV, LTC, and ARV: The Math Behind Investor Loans

By MercFinancial · Published 2026-07-18

LTV, LTC, and ARV are three different lending caps — learn how they combine, why the lowest one wins, and how to calculate your real loan amount.

LTV, LTC, and ARV are the three ratios a lender runs your deal through before quoting a loan amount, and each one measures something different. LTV (loan-to-value) caps the loan against the property's current, as-is value. LTC (loan-to-cost) caps it against your total project cost — purchase price plus rehab budget. ARV (after-repair value) caps it against what the property will be worth once the work is finished. A lender calculates all three and lends against whichever produces the smallest number, not whichever ratio sounds best in a marketing headline.

That last point is where most newer investors get tripped up. A lender's site advertises "up to 90% of ARV," the investor runs the math on their target house, and the number in their head is thousands higher than what actually shows up on the term sheet. The ARV percentage was real — it just wasn't the binding constraint. LTC or LTV capped the loan first. Understanding how the three ratios interact, not just what each one means alone, is what lets you predict your real number before you submit a deal.

"I kept getting quotes for less than the site said I'd qualify for, and nobody explained why until I asked directly. Once someone walked me through which cap was actually driving the number, the whole thing made sense — and I stopped wasting time on deals that were never going to pencil."

Three Ratios, One Question: How Much Will They Actually Lend?

Every investor loan quote is really the answer to one question, run through three separate filters. LTV asks: if this deal went sideways today, what could the property sell for right now? LTC asks: how much skin do you have in this deal relative to what the lender is putting up? ARV asks: assuming the rehab goes as planned, what will this property be worth when you're done? None of the three is "the" number a lender uses — they're three independent ceilings, and your actual loan amount is whichever ceiling is lowest.

The three ratios pull from different data: LTV from an as-is appraisal done today, LTC from your purchase contract and contractor's scope of work, ARV from comparable sales of already-renovated properties nearby. A property can look strong on one ratio and weak on another — which is why lenders don't quote a number until they've run all three.

LTV: Lending Against What the Property Is Worth Today

Loan-to-value is the ratio most borrowers already know from a conventional mortgage: loan amount divided by the property's current appraised value. On investor deals it works the same way, but "today's" value matters more, because distressed or dated properties often carry a current value well below their post-rehab value — and LTV only cares about today.

LTV tends to govern deals with little or no renovation involved — a DSCR rental loan on a property that's already rent-ready, a bridge loan on a stabilized asset, or a cash-out refinance. Typical LTV caps run lower on investor properties than owner-occupied homes, and tighten further on property types lenders consider riskier, like raw land or thinly-comped markets. If you're not doing a rehab, LTV is usually the ratio to watch closest.

LTC: Lending Against What You're Putting Into the Deal

Loan-to-cost is the ratio unique to renovation and construction lending. Instead of measuring against value, it measures against your total project cost — purchase price plus rehab budget, plus in some cases soft costs like permits, holding costs, or a contingency reserve. Loan amount divided by total cost gives you the LTC percentage.

Lenders use LTC to make sure you have real equity in the transaction, not just the property. A borrower putting up meaningful cash toward both the purchase and the rehab has a strong incentive to see the project through and protect their own money if things get tight. That's also why LTC caps tend to be the most conservative of the three ratios on a fix-and-flip — lenders would rather cap the loan tightly here than lean entirely on a projected ARV that hasn't happened yet.

Rehab funds under an LTC-based loan almost never disburse in one lump sum — they release in draws as work is completed and verified. See how fix-and-flip loan draws work for the mechanics of getting rehab dollars released stage by stage.

ARV: Lending Against What It Will Be Worth After Rehab

After-repair value is the projected market value of the property once your renovation is complete, based on comparable sales of similar, already-renovated properties in the same area. This is the ratio that lets hard money and fix-and-flip lenders finance more than the property is worth today — they're underwriting against where the value is headed, not just where it sits now.

Lenders estimate ARV by having an appraiser or comp analyst pull recent sales of finished, comparable properties and adjust for condition and finish level. Your scope of work matters: a full gut renovation supports a higher ARV than a cosmetic refresh, but only if the comps back it up. An ARV number pulled from an online estimator isn't the ARV a lender will underwrite to; theirs comes from a real appraisal tied to your renovation plan.

ARV also drives the refinance step of the BRRRR strategy, where after-repair value — not original purchase price — determines how much cash you can pull out on the back end. If that's your model, financing the BRRRR method walks through how ARV shows up at every stage, not just the acquisition loan.

How Lenders Combine the Caps — the Lowest Number Wins

Once a lender has your LTV cap, your LTC cap, and your ARV cap, the underwriting math is simple: calculate the maximum loan amount each ratio allows, and offer the smallest of the three. There's no averaging and no picking the most favorable ratio just because it looks generous.

This is also why two borrowers buying similar houses on the same block can get different offers. A lightly distressed property with a high as-is value and modest ARV lets LTV govern generously. A true gut job with a low as-is value and a big ARV spread lets LTC or a conservative ARV cap govern instead, tightening the loan relative to total cost. Same neighborhood, same lender, different binding constraint.

Worked Example: One Flip Run Through All Three Ratios

Numbers make this concrete faster than definitions do. The figures below are a hypothetical, round-number scenario to illustrate the math — not a quote or a promise of terms.

The deal had strong LTC and ARV numbers, but a comparatively high as-is value relative to the purchase discount meant LTV was the tightest cap. Borrowers who only run the ARV math walk into that call expecting $224,000 and are surprised when the real offer is $70,000 lower. Running all three ratios yourself before you talk to a lender removes that surprise.

Using These Ratios to Screen Deals Before You Offer

The most useful thing about LTV, LTC, and ARV isn't understanding them after the fact — it's using them to screen a deal before you write an offer. Know roughly what caps a lender applies to your loan type, and you can back into your maximum purchase price before you're emotionally attached to a property.

• Pull your own comps first. Don't rely on a listing agent's ARV estimate or an automated valuation. If the ARV doesn't hold up, none of the downstream math matters.
• Run all three caps, not just one. A deal that looks great on ARV alone can still fail on LTC if the rehab budget is aggressive relative to purchase price.
• Build in a rehab contingency. Renovation costs run over more often than under. A tight LTC cushion on paper can evaporate the moment a change order hits.
• Compare structures, not just one lender's numbers. Hard money, bank financing, and DSCR loans apply these ratios differently — see hard money vs. bank vs. DSCR for how caps and qualification shift by loan type.

Every deal type on the real estate funding side of our business runs through this same three-ratio math, whether it's a fix-and-flip, a bridge loan, or a ground-up build. Programs and typical caps vary by loan type and lender — which is exactly why running your numbers against real, current underwriting guidelines is worth the ten minutes before you offer.

Frequently Asked Questions

What is the difference between LTV and LTC?

LTV (loan-to-value) measures the loan against the property's current, as-is value — what it's worth today, before any work is done. LTC (loan-to-cost) measures the loan against your total project cost: purchase price plus rehab budget and often soft costs. On a deal with no renovation, only LTV applies; on a rehab or construction deal, LTC typically becomes the more conservative of the two caps.

How do lenders determine ARV?

Lenders determine ARV through an appraisal or comp analysis that pulls recent sales of comparable, already-renovated properties in the same market and adjusts based on your specific scope of work. It is not the same as an online automated value estimate, and lenders won't underwrite to a number that isn't backed by real comps tied to the renovation plan you submit.

What percentage of ARV do lenders typically finance?

ARV-based loans commonly finance in the range of roughly 65% to 75% of projected after-repair value, though the exact percentage varies by lender, property type, borrower experience, and market. That percentage is only one of three caps a lender applies — the final loan amount is whichever of the LTV, LTC, or ARV caps produces the lowest figure.

Which ratio matters most on a fix and flip?

On most fix-and-flip deals, LTC ends up being the most conservative and the most binding constraint, since lenders want real borrower equity in both the purchase and the rehab budget. LTV and ARV still apply and can govern instead, depending on your purchase discount and projected value increase — which is why all three need to be run, not just the one you assume will apply.

This article is for educational purposes only and is not financial advice. Loan programs, rates, and approvals vary by lender and borrower profile.