The Quick Read: Start by dividing the rent a lender will actually count by the full monthly payment (principal, interest, taxes, insurance and association dues), then repeat the math with a lower rent and higher costs, so you know how much cushion the deal really has. That ratio is your DSCR, short for debt service coverage ratio. It tells you which lever to pull (price, down payment, rent evidence) before you pay for a credit pull or an appraisal.
- Use the lender’s rent, not your hoped-for rent. That means a signed lease, or an appraiser’s market-rent estimate.
- Put taxes, insurance and dues in the payment. Rent against principal and interest alone overstates coverage.
- Run three versions: your best case, a lower-rent case, and a higher-cost case.
- Clearing the ratio is not the same as positive cash flow. Repairs, vacancy, management and utilities sit outside the math.
- Coverage is one test. Leverage, credit, reserves and property type are the others, and every program sets them differently.
Key Terms Defined
You will see these words in every lender conversation. Here is what each one means.
PITIA: principal, interest, taxes, insurance and association dues. It is the full monthly obligation on the property, and it is the bottom half of the DSCR fraction.
LTV (loan-to-value): the loan amount as a percentage of the property’s value. A 75% LTV means the lender funds 75% and you cover the rest. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
Reserves: liquid cash left after closing, usually counted in months of PITIA. Lenders want proof you can carry the property through a rough patch.
NOI (net operating income): rent minus operating expenses, before any loan payment. Commercial lenders divide it by the loan payment. Most residential investor programs do not use it.
Rent schedule forms (1007 and 1025): appraisal forms where the appraiser estimates what a property should rent for. Form 1007 covers one unit. Form 1025 covers two to four units.
Interest-only period: a stretch of the loan where the payment covers interest alone. It lowers the payment, so it lifts the ratio on the same rent.
Prepayment penalty: a fee for paying the loan off early, usually inside a set window. It affects your exit plan, not your coverage number.
DSCR Calculator
Run the numbers in your market
Rate source: Freddie Mac 30-yr average via FRED® — Federal Reserve Bank of St. Louis · effective Oct 15, 2026
Prefilled with starting assumptions — enter your own rent or nightly figures, taxes, insurance, and HOA for a more accurate picture.
Program parameters update from Lendmire’s centralized guideline source. Taxes and insurance are editable estimates.
As of Oct 15, 2026 · General Freddie Mac market benchmark, not a Lendmire loan offer. Rent, nightly rate, occupancy, taxes, and insurance are editable estimates. Short-term rental figures are estimates only and vary significantly by season, property type, management approach, and local short-term-rental rules — confirm local regulations before relying on them. Qualifying income for short-term rentals varies by program — some use appraisal market rent, others use documented STR history or projections — and is confirmed in underwriting. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
Why Run the Numbers Before You Call?
Running the math first tells you what the deal needs before a lender tells you what it lacks. You learn how much rent, down payment or price cut moves the file. You also avoid paying for an appraisal on a deal that was never going to work.
Think of it as a pre-flight check. The lender will run these same numbers anyway. The difference is whether you have already seen the answer and picked a response.
DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage. The loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. That is why the property’s math matters more than your pay stub.
It also suits borrowers whose traditional personal-income documentation understates what they earn. If that is you, Lendmire’s piece Who Is The Best Mortgage Lender For Self Employed? covers the personal-income side of the picture.
The Workflow, Step by Step
Five steps, in order. Each one ends with an output you carry into the call.
Step 1: Pick a Rent Figure You Can Defend
Use signed-lease rent if the property is occupied. Use a conservative market-rent estimate if it is vacant or newly purchased. Skip asking rents and best-month numbers. Optimism is the most common way a file falls apart at the appraisal.
Here is why. The rent a lender counts is the lender’s number, not yours. On most programs in the wholesale network Lendmire places files with, the lender uses the lower of the lease and the appraiser’s market rent. A lease signed above market does not lock in your figure.
That appraisal borrows a standard from the conventional world. Fannie Mae’s Selling Guide calls for a rent schedule form when a one-unit investment property is qualified on rental income. DSCR loans are not agency products, so treat that as a borrowed yardstick, not a governing rule.
The form itself is simple. The lender gets market rent from the appraiser, built on three comparable rentals and ending in a line for indicated monthly market rent, as the Freddie Mac host copy of the form shows. For two to four units, Fannie Mae’s appraiser resources list Form 1025 as the small residential income property report. The rent is set per unit, so a duplex can count one unit at its lease and the other at market.
Your output: one defensible monthly rent, plus a lower backup figure.
Step 2: Build the Full Payment
This is where most home-run math dies. Principal and interest depend on the loan amount, the term and any interest-only period. Then add the monthly share of property taxes, a real insurance quote, and any HOA or condo dues.
Use an actual insurance quote, not a guess. Use the actual tax bill, or the county’s reassessed figure if a purchase will reset it. For a condo or townhome, get the dues statement.
Do not stop at principal and interest. That shortcut feels harmless, but it inflates your coverage every time.
Your output: one monthly PITIA figure, built from real quotes.
Step 3: Divide, Then Divide Again
Divide the rent by PITIA. Rent equal to the payment is 1.00. Rent at twice the payment is 2.00. Below 1.00, the property does not cover itself, and the gap comes out of your pocket.
Then run it three ways:
1. Your best-case rent against your best-case costs.
2. A lower rent, as if the appraiser comes in light.
3. Both together: lower rent and higher taxes and insurance.
Insurance is the usual culprit. Trepp reported that multifamily property insurance rose 58% over five years, the fastest-growing major expense category. That covers apartment buildings, not single-family rentals, so read it as context. The direction still applies. A quote that lands higher than you modeled can drag a thin file under the line.
Your output: three coverage ratios, not one.
Step 4: Check the Other Levers
Coverage is only one test. A strong file clears two: enough equity and enough rental coverage. These are the ranges the network’s programs typically use, always subject to lender guidelines and individual underwriting:
- Purchase leverage: most investment-property purchases land at 75%–80% LTV, which means 20%–25% down. Select high-leverage programs reach 85% LTV on a purchase (15% down), generally with a score around 700 or higher.
- Cash-out refinance: the ceiling is around 75% LTV on a standard rental, with about six months of seasoning (ownership time) as the common expectation.
- Credit: a 620 floor exists in parts of the network. Most programs want around 660. A 700-plus score unlocks the strongest leverage tiers.
- Loan size: standard programs run up to $3,000,000, and smaller balances route through select lenders. Above $2,500,000 the network generally holds to 30-year fixed structures.
- Reserves: commonly around six months of PITIA. Conservative rate-and-term files at modest leverage under $1,500,000 can see reserves waived, and larger loans typically step up to about nine months. It varies by lender, leverage, loan size and transaction type.
One thing a bigger down payment does: it lowers the payment and can lift your ratio. One thing it never does: erase a leverage cap, a credit floor, a reserve rule or a property-type restriction. If you are weighing home equity for that down payment, Lendmire walks through how to run the DTI math before using a HELOC as a down payment.
For the full program picture, the complete DSCR loans guide lays out how these pieces fit together.
Your output: a short list of which levers are already comfortable and which are tight.
Step 5: Gather What the File Will Need
Qualifying on property income means less personal-income paperwork. It does not mean none. Have these ready:
- Lease agreements and a rent roll, if the property is occupied
- An insurance quote and the latest tax bill
- An HOA or condo dues statement
- Entity documents, if you are buying through an LLC (subject to lender program eligibility)
- Proof of reserves
Your output: a folder you can send the day a lender asks.
A Worked Example
Say you are comparing two rentals. Both sets of ratios below are modeled assumptions for illustration, not market data.
| Run | Property A | Property B |
|---|---|---|
| Best-case rent and costs | about 1.30x | about 1.05x |
| Lower appraised rent | about 1.15x | about 0.95x |
| Lower rent plus higher costs | about 1.05x | about 0.88x |
Property A clears 1.00 on every run. Thin at the bottom, but passing. Property B tells a different story. It looked fine on the first pass and slipped under 1.00 as soon as the appraisal came in light.
What now? Property B has paths, not a verdict. A larger down payment lowers the payment. A lower purchase price does the same. Better rent evidence may help if the market supports it. An interest-only period, available through select lenders in the network, lowers the payment on the same rent. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Each is a structure a lender would review, subject to credit approval, property review and program guidelines.
Honestly, Property A may be the smarter buy even with less upside. A property that passes every stress run beats one that passes only when everything goes right.
Where the Rule Breaks
The basic formula holds for most long-term rentals. These cases bend it.
The commercial formula is a different animal. Commercial lenders divide NOI by principal and interest. That formula subtracts operating costs from income, but leaves taxes and insurance out of the denominator. The residential investor version divides rent, before expenses, by the full PITIA. Run the commercial version at home, and you can get a very different answer than the lender’s. Larger multifamily buildings often do use NOI-based underwriting.
Short-term rentals. A nightly rate times 30 is not a market rent. The rent schedule form is built on comparable properties leased monthly. Short-term rental programs set their own terms: purchases to 75% LTV, cash-outs to 70% on short-term-rental collateral (versus 75% on standard rentals), a 640-plus score, and about 12 months of hosting history. On an STR purchase, coverage starts at 1.00. Refinances carry their own 1.00 floor. Short-term rental rules can vary by city, county, HOA, and property type, so confirm local rules before relying on projected rental income. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.
Vacant or just-purchased properties. There is no lease, so only the appraiser’s market rent counts.
Coverage below 1.00. A separate select-lender path takes coverage below 1.00. Expect lower LTV and different terms than a file that clears the line.
No-ratio structures. These are available only through select lenders, generally for borrowers who already own a primary residence. They are a niche path, not a default.
Property types. Manufactured homes (single- and double-wide), log homes and barndominiums are not offered in the network’s DSCR programs. Run those numbers all you like. They will not change that.
How Structure Changes the Ratio
The same rent can give you different coverage depending on how the loan is built. The spine of the network’s lineup is the 30-year fixed. Extended terms such as 40-year, and interest-only periods, are available through select lenders. ARM structures exist for investors who want them.
Longer terms and interest-only periods lower the payment, which raises the ratio. They also change what you owe over time. A higher ratio on paper is not a free lunch (the principal is still waiting). Prepayment penalties belong in this conversation too, because they limit your exit even though they leave the coverage number alone.
Clearing 1.00 Is Not “Positive Cash Flow”
DSCR compares rent to PITIA and nothing else. Repairs, vacancy, management, utilities and capital expenses sit outside the calculation. A property can clear 1.00 and still lose money after a bad year.
So build a second sheet. Take your rent, subtract PITIA, then subtract what you expect to spend on upkeep, empty months and management. That is your cash flow. The lender checks the first number, and you live with the second.
Your Numbers Sheet
Carry this into the call. Fill in the second column before you dial.
| Item | Where to find it | Question it triggers |
|---|---|---|
| Rent (lease and low case) | Lease, rent roll | Which rent counts on this program? |
| Insurance | Written quote | Does a higher quote change my leverage? |
| Taxes | Tax bill | Is reassessment built into your math? |
| Credit score | Your credit report | Which tier am I in? |
| Cash and reserves | Account statements | How many months do you require? |
| Target price and down % | Your plan | What leverage fits my ratio? |
What to Do (and Not Do) Before You Dial
Do pull your own credit report and correct errors. Do collect the documents above. Do decide your walk-away ratio before you hear a pitch.
Don’t open new credit lines. Don’t move large, unexplained sums between accounts. Don’t assume a quote reconciles with your math. Compare the lender’s rent, taxes and insurance to yours, line by line. If a number differs, ask why. The answer is often the appraiser’s rent.
Also ask when the credit pull happens. An application for a DSCR loan usually means a hard pull, and you want to choose that moment.
What Only a Lender Can Confirm
You can estimate rent, payment, ratio and reserves. You cannot confirm the appraised value, the appraised rent, which program fits your file, or final eligibility. Those come from the lender after review. Programs change, and every file is underwritten individually.
Your edge is walking in with ranges instead of hopes. A lender hears a prepared investor differently than one asking, “What can I get?”
Next Step
If you are buying or refinancing a rental property and want to see how the numbers work, Lendmire, a broker arranging financing through select lenders in its wholesale network across 41 markets including Washington, D.C., can help you compare DSCR loan options based on the property income, credit profile, leverage, and investor goals. Reach the team at 828-256-2183. Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.
Frequently Asked Questions
Should I run my numbers if the loan is based on the property’s income?
Yes, and it matters more, not less. The property’s rent and payment are the file. If you know your ratio under three scenarios, you can choose price, leverage and structure before a lender sees the deal.
Which rent do I use for a vacant property?
Use a conservative market-rent estimate, because only the appraiser’s market rent counts without a lease. Check it against comparable rentals nearby. Use a lower backup figure in case the appraisal comes in light.
Does a ratio above 1.00 mean the property cash flows?
No. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities and capital costs are not in the calculation, so a property can clear the line and still run tight.
How hard should I stress taxes and insurance?
Hard enough to see the break point. Insurance and tax bills often arrive higher than modeled, so try a meaningfully higher figure for each and note where the ratio crosses 1.00. If the file only works on the optimistic run, it is thin.
Will a bigger down payment fix a weak ratio?
It helps, because a smaller loan means a smaller payment. It does not override leverage caps, credit floors, reserve rules or property eligibility. The strongest files have enough equity and enough rental coverage together.
About Lendmire
Lendmire is a non-QM mortgage brokerage (NMLS# 2371349) arranging DSCR investor loans in 41 markets, including Washington, D.C., through wholesale and investor-lending channels. DSCR loans are evaluated by the lender on rental income rather than personal income, subject to lender guidelines — a fit for LLC-owned portfolios, self-employed investors, and operators scaling beyond conventional loan caps. Recognized as a Scotsman Guide Top Mortgage Workplace in 2025 and 2026.
Get Started
Ready to find the right loan for you?
In about 30 seconds you can review financing options available for your investment property. No commitment required.
Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
2. Freddie Mac host copy of Form 1000 (rent schedule)
3. The Real Deal, multifamily insurance costs
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How to Choose a DSCR Lender That Actually Closes · How Much Cash-Out a DSCR Lender Releases on a Paid-Off Rental · How to Recycle Equity Into the Next Rental With DSCR Cash-Outs
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.