Your Mortgage Payment Is Not Your Real Monthly Cost

After more than 30 years in real estate, mortgage lending, and running my own brokerage, there is one conversation I have with nearly every buyer before we look at a single listing. It is not about square footage or granite countertops. It is about the number that actually shows up in your bank account every month — and how different it is from what you might expect. For a closer look at the insurance component specifically, see my Florida homeowners insurance guide.

Affordability is still the headline in 2026. Mortgage rates are sitting in the mid-6% range nationally, and buyers are being squeezed from every direction. The sticker price of a home is just the entry point. The real question every buyer needs to answer before falling in love with a property is this: what is my full monthly housing cost?

If you are only looking at principal and interest, you are looking at less than half the picture.

The starting point: your mortgage payment

Let us use a realistic number. Say you are buying a home in Sarasota for $500,000 with 20% down. At current rates in the mid-6% range, your principal and interest payment lands somewhere around $2,500 to $2,600 per month. That is the number most online mortgage calculators will give you.

It is also the number that is going to lull you into a false sense of affordability if you stop there.

What you actually pay every month

Here is where the real math lives. These are the costs that turn a $2,500 mortgage into something much higher — and they are not optional. They show up whether you plan for them or not.

Property taxes

Florida has no state income tax, which is one of the reasons people move here. But that tax revenue has to come from somewhere, and property taxes are where the state makes up the difference. In the Sarasota area, property tax rates vary by county and by whether you qualify for homestead exemption. For a non-homesteaded property (which includes most buyers who are purchasing a primary residence but have not yet established Florida residency), you can expect to pay roughly 1.5% to 2% of the assessed value annually. On a $500,000 home, that is $625 to $833 per month rolled into your payment.

Once you establish homestead exemption, your assessed value is capped at a 3% annual increase under the Save Our Homes amendment — which can save you significantly over time. But that protection does not kick in the day you close. It takes effect the following January, and it only applies to your primary residence.

Homeowners insurance

This is where Florida buyers get a wake-up call. Homeowners insurance in Florida has gone through significant rate increases over the past several years, driven by roof claims, litigation costs, and storm exposure. For a $500,000 home in the Sarasota area, annual premiums commonly range from $4,000 to $8,000 or more, depending on the age of the home, roof condition, construction type, and how close you are to the coast. On a monthly basis, that is $333 to $667 or higher — and many buyers do not realize this until they get their first insurance quote.

Roofs matter enormously here. If a roof is over 15 years old, some insurers will not write a policy at all, or they will require an inspection first. If you are buying a home with an aging roof, you need to factor in the cost of replacement — typically $15,000 to $30,000 — either as a negotiation point or as a near-term capital expense.

Flood insurance

If the home is in or near a flood zone, flood insurance is a separate policy from your homeowners insurance — and it is not included in the estimates above. FEMA flood zone designations affect the cost, and even properties outside designated flood zones can flood. In coastal Florida, I have seen flood insurance premiums range from a few hundred dollars a year to $5,000 or more, depending on elevation, location, and the specific flood zone. If the home is condo-located, the master policy may cover some flood exposure, but individual unit owners often carry their own coverage as well.

The bottom line: do not assume your homeowners insurance covers flood damage. It does not. In Florida, that is a separate calculation.

HOA and condo fees

If the home is in a community association — and many are, especially in Lakewood Ranch, Siesta Key, Venice, and the newer developments across Sarasota, Manatee, and Charlotte Counties — monthly HOA dues are part of your housing cost. In the Sarasota area, HOA fees range widely:

• Single-family home communities: $100 to $400 per month
• Townhome communities: $250 to $600 per month
• Condos: $400 to $1,200+ per month, depending on amenities, building age, and reserve funding

In 2026, after the Surfside collapse legislation took effect, Florida condos are facing increased reserve funding requirements. That means HOA and condo fees are trending upward in many buildings, particularly older ones that were underfunded. If a condo looks like a bargain on price, check the monthly fee first. A $300,000 condo with $900 in monthly HOA dues is costing you more than it appears.

Utilities

Florida summers are long, hot, and humid. Air conditioning is not a luxury here — it runs for the better part of eight months a year. For a typical 2,000 to 2,500 square-foot home, monthly electric bills in the Sarasota area commonly run $200 to $400 or more during summer months, and FPL rates continue to adjust annually. Add water, sewer, trash, and internet, and you are looking at $350 to $600 per month in combined utility costs.

Older homes with original windows, poor insulation, or aging AC systems will run higher. This is one of those costs that is easy to underestimate until you get your first summer bill.

Maintenance reserves

I include this because no one else does, and it matters. A home requires ongoing investment — landscaping, pest control, pool maintenance, HVAC servicing, appliance replacement, roof and exterior maintenance. A commonly used rule of thumb is 1% to 1.5% of the home's value annually. On a $500,000 home, that is $5,000 to $7,500 per year, or $417 to $625 per month. Set aside as a reserve. You will need it.

The real number: a worked example

Let us put it all together. Here is what a $500,000 home in Sarasota actually costs per month in 2026, assuming a 20% down payment and current market rates:

That is almost double the mortgage payment alone. And this is a moderate estimate — it can easily push past $5,000 per month in certain communities or with older homes that carry higher insurance and maintenance costs.

Your own checklist: what to calculate before you shop

Before you fall in love with a listing, run these numbers for any home you are considering. Here is the checklist I walk through with my buyers:

Why this matters more than ever right now

With mortgage rates in the mid-6% range, buyers have less room for error in their monthly budget than they did two or three years ago. A home that looks affordable on paper at $500,000 might stretch your budget to its limit once you factor in the full picture. And I have watched this happen more times than I can count over the past three decades.

The buyers who get surprised are the ones who only looked at the mortgage payment. The buyers who make confident decisions are the ones who understood the full cost before they made an offer.

That is exactly why I walk through these numbers with every buyer before we start looking. It is not about talking you out of a home. It is about making sure the home you choose is one you can live in comfortably — not just afford on paper.

A note for relocating buyers

If you are moving to Florida from out of state, the cost picture has a few extra layers. You will want to understand the homestead exemption (and when you qualify for it) — for a detailed guide, see my Florida homestead exemption guide — how Florida property taxes compare to what you pay now, and the insurance market — which works differently here than anywhere else in the country. I have helped hundreds of buyers make this transition, and the ones who plan their budget with the full picture in mind have a much smoother experience.

If you're also weighing whether a condo might be a better fit than a single-family home, my guide to buying a condo in Sarasota covers association reserves, special assessments, and the due diligence checklist. For a broader look at what living in the area costs across housing, utilities, and daily expenses, see my cost of living in Sarasota guide.

Let me run the numbers with you

I have been in this business for more than 30 years. I have seen buyers get surprised by costs they did not anticipate, and I have watched sellers struggle because they did not plan for the real expenses of a transaction. The way I work is straightforward: we go through the real numbers together before you make any decisions. No guessing, no surprises.

If you are thinking about buying a home in Sarasota, Manatee, or Charlotte Counties — and you want an honest breakdown of what it will actually cost you each month — call me. I will walk you through it.

For answers to common buyer questions about insurance, costs, and the purchase process, visit my Buying FAQ.

Kim Donahue is a REALTOR® with Medway Realty, serving Sarasota, Manatee, and Charlotte Counties. With over 30 years of experience across real estate, mortgage, and business ownership, she holds designations including SFR, CHSA, CHBA, SRES, and NAEA, and is a licensed notary in Florida (SL3352997).