Rental Property ROI in Palm Beach County: Cap Rate, Cash-on-Cash and the Florida Costs That Shrink Returns

Rental property ROI is the return you earn on a rental after real costs, and in Palm Beach County those costs can eat a big share of the rent. Many listings show a strong gross yield. But insurance, HOA dues, upkeep and a property tax bill that resets after you buy all come out before you see a dollar. This guide shows how to measure a rental the way lenders and seasoned investors do, then how to stress-test the result before you make an offer.

Key takeaways

• Gross yield (annual rent divided by price) is only a first filter. It ignores every expense.
• Cap rate is net operating income divided by price. It tells you what the property earns before any loan.
• Cash-on-cash return is yearly cash flow after the mortgage, divided by the cash you put in.
• In Florida, a non-homestead property is reassessed at just value after a sale, so the seller's tax bill is not your tax bill.
• Run the numbers again with higher insurance, higher taxes and an extra month of vacancy. If the deal still works, it is a stronger deal.

Three ways to measure rental property ROI

Investors use a few simple ratios. Each one answers a different question, so it helps to know all three.

Gross rent yield

Take the yearly rent and divide it by the price. A home that rents for $2,300 a month brings in $27,600 a year. At a $250,000 price, the gross yield is about 11%. That number looks great, but it leaves out taxes, insurance, repairs and vacancy. So use it only to sort listings, never to decide.

Cap rate

Cap rate is net operating income (NOI) divided by the price. NOI is the rent you actually collect minus operating costs. It does not include your mortgage. As a result, cap rate lets you compare two properties as if you paid cash for both. Our guide on how to calculate cap rate covers the formula step by step.

Cash-on-cash return

Cash-on-cash return looks at your actual money. Take the yearly cash flow after the mortgage payment and divide it by the cash you put in, including the down payment and closing costs. If you borrow, this is the number that tells you whether the rental pays you each year.

A worked rental property ROI example

Here is a sample single-family rental with no HOA. Every input below is an assumption for the example, not a quote or a market average. Swap in real numbers from the listing, the Tax Collector, an insurance agent and a property manager.

• Price: $250,000
• Rent: $2,300 a month, or $27,600 a year
• Vacancy allowance: 5%, or $1,380
• Property taxes: $4,500
• Insurance: $3,500
• Repairs and upkeep: $2,000
• Property management: 10% of collected rent, or $2,622

First, find the rent you actually collect. That is $27,600 minus $1,380, or $26,220. Next, add up the operating costs: $4,500 plus $3,500 plus $2,000 plus $2,622 comes to $12,622. So NOI is $26,220 minus $12,622, which is $13,598.

The cap rate is $13,598 divided by $250,000, or about 5.4%. That is half the 11% gross yield. In other words, roughly half the rent went to costs before any loan.

Cash purchase versus a mortgage

Say you pay cash and spend $7,500 on closing costs. Your cash-on-cash return is $13,598 divided by $257,500, or about 5.3%.

Now say you put 25% down instead. That is $62,500 plus the same $7,500 in closing costs, so $70,000 in cash. The $187,500 loan, at an assumed 7% rate over 30 years, costs about $1,247 a month, or $14,969 a year. Then your yearly cash flow is $13,598 minus $14,969, which is a loss of $1,371. Your cash-on-cash return is about negative 2%.

This is called negative leverage. When the loan rate is higher than the cap rate, borrowing lowers your yearly return. Some investors accept that because they expect the home to gain value. Others put more cash down or wait for a better price. Either way, you should know which bet you are making.

Florida costs that shrink rental property ROI

Some of the biggest swings in a Florida rental come from costs that change after you buy. These are the ones to price carefully.

The property tax reset

This is the cost new investors miss most often. Under section 193.1555 of the Florida Statutes, non-homestead residential property is assessed at just value as of January 1 of the year after a change of ownership. After that, yearly increases in assessed value are capped at 10% for all levies except school district levies.

So if the seller has owned the home for years, their tax bill may be far below what yours will be. A homestead owner may have an even lower bill under the Save Our Homes cap. Therefore, never use the seller's tax bill in your math. Instead, use the Palm Beach County Property Appraiser's tax estimator with your purchase price.

Insurance and your rental property ROI

Insurance is a large line item here, and quotes vary widely by roof age, wind mitigation features, flood zone and building type. A newer roof and hurricane-rated openings can lower a premium. An older roof can make a home hard to insure at all. So get a real quote during your inspection period, not after closing. A landlord policy also differs from a homeowner policy, and a landlord insurance agent can explain the main coverages.

HOA and condo dues

Many lower-priced rentals in the county are condos or homes in HOAs. Dues pay for shared costs, but they are fixed costs you pay even when the unit is empty. Condos also face Florida's newer reserve rules. Under section 718.112, associations in buildings three stories or taller must complete structural integrity reserve studies, and owners can no longer vote to waive reserves for those items. That can push dues or special assessments higher. Read the budget, the reserve study and recent minutes before you buy.

Rental limits

Some associations cap leasing, set minimum lease terms or require tenant approval. Those rules can block your plan entirely. Ask for the governing documents early.

Stress-testing your rental property ROI

A stress test asks one question: what if things go worse than planned? Let's rerun the example with three bad breaks at once.

• Insurance goes up by $1,500 a year.
• Property taxes come in $1,000 higher than your estimate.
• You lose one extra month of rent to a slow turnover.

Collected rent drops to $23,920. Management falls a bit, to $2,392, because it is a share of rent. Total costs rise to $14,892. As a result, NOI falls to $9,028, and the cap rate drops to about 3.6%.

That is the real lesson. A deal that looked like 5.4% can slip under 4% with a few common surprises. If your plan only works in the best case, the price may be too high, or you may need more cash down.

Quick checks before you write an offer

1. Verify rent with active and recently leased comps, not the seller's number.
2. Estimate taxes from your price, not the current bill.
3. Get an insurance quote during the inspection period.
4. Read the HOA budget, reserve study and leasing rules.
5. Set aside money for big items, such as the roof, AC and water heater.

Parts of rental property ROI that cash flow leaves out

Cash flow is only part of the picture. Two other pieces can change your total return over time, so track them on their own lines.

Loan paydown

Each mortgage payment pays down some principal. That builds equity even in a year with thin cash flow. However, you only get that money back when you sell or refinance, so it does not help you cover a surprise repair next month.

Depreciation and tax rules

The IRS lets rental owners depreciate the building, not the land, over time. IRS Publication 527 explains that residential rental property is generally depreciated over 27.5 years. That deduction can lower the tax you owe on rental income. But it can also be recaptured when you sell, so talk with a tax advisor before you count it in your math.

How local rents and prices compare

Rents and prices change a lot from city to city. According to Pure Equity's MLS data as of October 1, 2026, these are the median asking prices of active residential listings and the median asking rents of active rental listings in three markets investors often ask about. Condos and houses are mixed together in both figures, so treat them as a rough guide, not a deal.

• Port St. Lucie: median list price $429,000, median asking rent $2,600.
• Greenacres: median list price $252,450, median asking rent $2,100.
• Lake Worth Beach: median list price $436,000, median asking rent $1,995.

A quick gross yield on those medians gives about 7.3% in Port St. Lucie, about 10% in Greenacres and about 5.5% in Lake Worth Beach. Remember, that is before any costs. Also note that Lake Worth Beach is the city, while "Lake Worth" is a larger unincorporated mailing-address area that we track on its own. Check which one a listing is in, because taxes and rules can differ. You can see current data on our Port St. Lucie, Greenacres and Lake Worth Beach pages.

Frequently asked questions

What is a good rental property ROI in Palm Beach County?

There is no single target. It depends on your goals, your loan and how much risk you accept. Compare deals on cap rate and cash-on-cash return, and only after you stress-test both.

Is cap rate the same as ROI?

No. Cap rate measures what the property earns before any mortgage. ROI and cash-on-cash return measure what your own money earns, so they change with your down payment and loan rate.

Why will my property taxes go up after I buy a rental?

Florida reassesses non-homestead property at just value as of January 1 of the year after a sale. The seller's lower capped value does not carry over to you.

Should I count appreciation in rental property ROI?

You can track it, but keep it separate from cash flow. Appreciation is not guaranteed, and it does not pay the mortgage each month.

Sources

• Florida Statutes, section 193.1555 (non-homestead assessment limits)
• Florida Statutes, section 718.112 (condo reserves and structural integrity reserve studies)
• Palm Beach County Property Appraiser
• IRS Publication 527, Residential rental property
• Miami Realtors, Palm Beach County August 2026 market report

Thinking about selling a rental in Palm Beach County? We can show you what it would sell for and what you would net. Get a free home value report. Buying instead? Request an investor property and rental analysis and we will run the numbers on the homes you are watching.