Here’s what we hear from landlords all the time: “The rent covers the mortgage, so I’m fine.”

Then, usually late at night, a second question creeps in. If I’m fine, where does the money go?

The rent comes in every month. The mortgage gets paid. But the account never seems to grow, and every few months something breaks.

If that sounds familiar, you are asking the right question about your rental property. The answer is in two numbers most landlords have never run: cap rate and cash-on-cash return.

The Rent Covers the Mortgage. That Is Not the Same as Profit.

Covering the mortgage is the number most landlords watch. It is also the number that hides the most.

Here is a simple example. These are round numbers to show the math, not a real property.

Monthly rent: $2,000
Mortgage payment (principal and interest): $1,200

On paper, that looks like $800 a month, or $9,600 a year, in your pocket. Now add the costs that never show up on the mortgage statement:

Property taxes: $3,000 a year
Insurance: $2,000 a year
HOA dues: $600 a year
Repairs and maintenance: $2,400 a year
One month vacant between tenants: $2,000

That is $10,000 a year. The $9,600 you thought you were making is actually a $400 loss.

Repairs and vacancy are the two costs landlords tend not to track. To truly save money back, you need money set aside for both. A good rule of thumb is to save 10% of the monthly rent for repairs and maintenance, often called capital reserves, and 5% for vacancy. In this example, 10% of $2,000 is $200 a month, or $2,400 a year.

Yes, part of every mortgage payment is principal, so you are building equity. But equity is not cash in your pocket, and it is not what most landlords think they are earning.

Cap Rate in Plain English

Cap rate, short for capitalization rate, tells you how hard the property itself is working, with the mortgage left out of the picture.

That lets you compare one property against another without the mortgage being a factor. You are comparing apples to apples.

Cap rate = net operating income ÷ property value

Net operating income is your yearly rent minus your yearly operating costs: taxes, insurance, HOA, repairs, and vacancy. The mortgage does not count here.

Using the same house, worth $300,000:

Rent collected: $24,000 a year
Operating costs: $10,000 a year
Net operating income: $14,000
Cap rate: $14,000 ÷ $300,000 = about 4.7%

Cap rate answers one question: if you bought this house today with cash, what would it earn? That makes it the number to use when you compare this property to another one, or to anything else your money could be doing.

Cash-on-Cash Return

Cash-on-cash return looks at what you actually get back on the cash you put in.

Cash-on-cash return = annual cash flow ÷ total cash invested

Total cash invested is your down payment, closing costs, and any money you put into the property up front. Annual cash flow is what is left after every cost, including the mortgage.

Same house again. Say you put in $60,000 between the down payment and closing costs. Your cash flow, from the first example, is negative $400 a year.

Cash-on-cash return: negative $400 ÷ $60,000 = about negative 0.7%

So the same house has a 4.7% cap rate and a negative cash-on-cash return. Both numbers are true. Cap rate says the house earns something. Cash-on-cash says that with your financing, none of it is reaching you. That is why you need both.

The Hidden Costs Eating Your Return

These are the costs that quietly shrink both numbers:

Insurance. Premiums can jump at renewal, and many landlords never shop it or recheck what they are paying.
HOA and condo fees. Dues go up, and special assessments for roofs, plumbing, fire safety, or other big projects can show up with little warning. In condos, rising association and insurance costs can also put pressure on what buyers are willing to pay.
Repairs and replacements. The HVAC, the roof, the water heater. They don’t happen every year, but when they do, one can wipe out a year of cash flow. Setting money aside each year is more honest than hoping they won’t come.
Vacancy and turnover. Every empty month is a month of rent gone, plus cleaning, paint, and the time it takes to find the next tenant.
Property taxes. In Georgia, the homestead exemption is for the home you live in, so your rental doesn’t get it. As values rise, the tax bill can follow.
Property management. If you pay a manager, the monthly fee and leasing fees come straight off the top.

Below-Market Rent: The Quiet Cost of Being Kind

Many longtime landlords have a tenant who has been there for years, pays on time, and takes care of the place. Raising the rent feels wrong, so they don’t.

That is a kind choice. It also has a price.

Say similar homes nearby rent for $2,000 and you are charging $1,600. That is $400 a month, or $4,800 a year. Over five years, it is $24,000.

Only you can decide whether that tradeoff is worth it. You just deserve to know what it costs before you decide.

A Quick Self-Check

Pull these numbers from the last 12 months:

Total rent you actually collected
Mortgage payment (principal and interest)
Property taxes
Insurance
HOA or condo fees, including any special assessments
Repairs, maintenance, and anything you replaced
How many months the property sat empty
Property management fees, if any
What similar homes nearby rent for today
What the property would likely sell for today

Then run both numbers. Net operating income divided by today’s value gives you your cap rate. Annual cash flow divided by the cash you put in gives you your cash-on-cash return.

The last two items on that list are the ones most landlords have to guess at. That is where we come in.

If the Numbers Disappoint

A disappointing number is not a verdict. It is information, and it gives you choices:

Bring the rent closer to market
Improve the property so it earns more or costs less
Sell
Sell and use a 1031 exchange to move into a better performing investment while deferring capital gains taxes

A 1031 exchange has strict IRS deadlines. Replacement property has to be identified in writing within 45 days of your sale, the purchase has to close within 180 days, and a qualified intermediary holds the money in between. We walked through three ways families use a 1031 exchange in Your Parents’ Rental Property Is Not a Blessing.

You can read more about how we help with 1031 exchanges and rental properties on our Investing page.

Questions Landlords Are Asking Us Right Now

How do I know if my rental property is actually making money? Take the rent you actually collected for the year and subtract every cost: mortgage, taxes, insurance, HOA, repairs, vacancy, and management. If what’s left is small or negative, the rent covering the mortgage isn’t telling you the whole story.

What is the difference between cap rate and cash-on-cash return? Cap rate compares what the property earns to what it is worth, with the mortgage left out. Cash-on-cash compares what you take home to the cash you put in, after the mortgage. Cap rate is about the property. Cash-on-cash is about your money.

What is a good cap rate for a rental house? There is no single right number. It depends on the area, the type of property, its condition, and what else your money could earn. Cap rate is most useful when you compare one option to another.

Should I raise the rent on a long-time tenant? That’s your decision. You may feel like you want to be kind. At the same time, if you choose not to raise the rent, are you being charitable and taking money out of your own pocket? Which then takes money out of the legacy you’re leaving behind for your family. Knowing the gap between what you charge and what the market would pay lets you make that choice on purpose instead of by default.

Can I sell a rental property without paying capital gains taxes right away? A 1031 exchange can defer capital gains taxes, not erase them, when you sell an investment property and buy like-kind real estate within the IRS deadlines. Whether it fits your situation is a conversation for your CPA.

Current as of October 2026. This article is general information about how these things work in Georgia. It is not legal or tax advice, and reading it does not create a professional relationship. Georgia law and tax rules change, and how any of this applies depends on your specific situation. Talk with your own attorney or CPA before you act. If you don’t have one, reach out to me and I can connect you.

Let’s Look at Your Numbers

If you own a rental in Peachtree City, Newnan, Fayetteville, or anywhere in the Greater Atlanta area, and you want to look at your numbers, let’s get together. We’ll run a real cap rate analysis on your property, with no obligation. Call, text, or email Tonya, and we’ll set up a time.

Let’s Connect:
Tonya Byrd, REALTOR® & Probate Specialist, Certified Keller Williams Real Estate Planner™
The Byrd Group, Inc. | Brokered by Keller Williams Realty Atlanta Partners
1200 Commerce Drive, Suite 110, Peachtree City, GA 30269
📞 Cell: 770-823-5786
📞 Office: 770-632-1112
📧 tonya@thebyrdgroup.com
🌐 www.thebyrdgroup.com
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