How to Calculate DSCR on Your First Rental, Step by Step

The formula in one line

Here is the whole formula: DSCR equals monthly rent divided by monthly PITIA. PITIA is shorthand for principal, interest, taxes, insurance, and association dues. Principal is the portion of your payment that pays down the loan balance. Interest is the cost of borrowing the money. Taxes are your property taxes. Insurance is the homeowners or landlord policy on the building. Association dues are what you pay a homeowners association, or HOA, if the property has one.

You can do the math monthly or yearly. As long as you use the same time period on the top and the bottom, the answer comes out the same. Most first-time investors find monthly numbers easier because that is how rent and payments actually show up in real life.

The good news is that you do not need a finance degree or special software. A calculator on your phone and five numbers will get you there. The trick is making sure each number is realistic, which we will cover after the example.

Step 1: Find the monthly rent

Start with what the property can realistically rent for each month. If the home already has a tenant, the current lease is your starting point. If it is vacant or you are buying it from someone who lived there, you will rely on an estimate of market rent, which is what similar homes nearby are renting for right now.

During the loan process, an appraiser usually completes a rent schedule, a form that compares the property with nearby rentals and states a market rent figure. Wholesale lenders often use that number, or the lease amount, based on their program rules. For planning purposes, look at comparable listings and be conservative. A rent estimate that is too optimistic is the most common reason a first deal looks better on paper than it turns out to be.

For our example, let's say the home will rent for $2,000 per month.

Step 2: Add up the monthly housing payment

Next, build the full monthly payment, piece by piece. For this example we will use simple, made-up round numbers so the math is easy to follow. Your real numbers will be different, so treat these only as a teaching tool.

Principal and interest is the loan payment itself. Rather than guess at any particular pricing, we will simply assume a monthly principal-and-interest payment of $1,200. Your broker can tell you what your actual payment would be once a specific loan program and loan amount are selected.

Property taxes are often quoted as a yearly bill. If the yearly tax bill is $3,000, divide by twelve to get $250 per month. Insurance works the same way: a $1,200 yearly landlord policy is $100 per month. Finally, suppose the home is in a neighborhood with an HOA that charges $50 per month.

• Principal and interest (assumed): $1,200 per month
• Property taxes: $3,000 per year, or $250 per month
• Insurance: $1,200 per year, or $100 per month
• HOA dues: $50 per month
• Total monthly PITIA: $1,200 + $250 + $100 + $50 = $1,600

Step 3: Divide rent by the payment

Now divide. Monthly rent of $2,000 divided by a monthly payment of $1,600 equals 1.25. That is your DSCR. In plain English, the rent covers the payment one and a quarter times over, with $400 a month left between the two figures.

If you prefer yearly numbers, you get the same answer. Yearly rent would be $24,000. The yearly payment would be $1,600 times twelve, or $19,200. And $24,000 divided by $19,200 is still 1.25. Pick whichever version feels natural and stick with it.

One important note: that $400 gap is not pure profit. DSCR leaves out things like repairs, vacancy between tenants, property management fees, and utilities you might pay as the landlord. The ratio is a qualifying tool, not a full picture of your cash flow, so budget for those other costs separately.

Step 4: Read what the number means

Once you have the ratio, here is the general way to interpret it. These are broad descriptions, and each wholesale lender program sets its own minimums and pricing, so your broker will tell you how a specific number lands with specific programs.

• Above 1.0: the rent more than covers the payment. Higher ratios generally give you more program options.
• Exactly 1.0: the rent and payment are equal. The property breaks even on the items in PITIA.
• Below 1.0: the rent does not fully cover the payment. Some programs may still consider it, but options narrow and you will want to look hard at whether the deal makes sense.

Three what-if scenarios

The best way to get comfortable with DSCR is to change one number at a time and watch what happens. Using the same $1,600 payment from our example, look at how the ratio moves when rent changes or when the payment changes.

Scenario A, lower rent: suppose the market rent comes in at $1,800 instead of $2,000. Divide $1,800 by $1,600 and you get about 1.13. The deal still covers its payment, but with less breathing room.

Scenario B, rent below the payment: if rent comes in at $1,500, then $1,500 divided by $1,600 is about 0.94. Now the rent falls short. That is a signal to revisit the purchase price, the down payment, or whether this is the right property at all.

Scenario C, a bigger down payment: go back to $2,000 in rent, but imagine you put more money down so the loan is smaller and the assumed principal-and-interest payment drops to $1,050. The new total payment is $1,050 + $250 + $100 + $50 = $1,450. Then $2,000 divided by $1,450 is about 1.38. A smaller loan means a smaller payment and a stronger ratio.

Common mistakes first-time investors make

Most DSCR surprises come from one of a few easy-to-miss details. Check each of these before you get attached to a property.

• Using last year's tax bill when the sale will trigger a new, higher assessment.
• Forgetting HOA dues, or missing a special assessment the HOA has already approved.
• Pricing insurance as a homeowner policy instead of a landlord policy.
• Assuming top-of-market rent when the home needs updates to command it.
• Leaving out flood insurance when the property sits in a flood zone.

Run your numbers with GoDSCR

Doing this math yourself is a great habit, and it helps you screen properties quickly before you make offers. When you find one you like, GoDSCR can help you firm up the numbers. As a mortgage broker, Loan Daddy LLC arranges and shops financing from wholesale lenders, so we can show you how your ratio fits with real program guidelines and what a realistic principal-and-interest payment looks like for your scenario. Bring your rent estimate, tax bill, insurance quote, and HOA info, and we will walk through it together.

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