Florida Mortgage Calculator

Q: Why do so many buyers get surprised by their first mortgage bill? A: Because they priced the loan and forgot the rest of the payment. This calculator runs the whole number — principal, interest, property taxes, homeowner's insurance, HOA dues, and PMI — the way I run it for buyers before they ever write an offer. Built by Keith Jones Sr, Broker/Owner (BK3328013), Public Services Realty, roughly thirty years working Northeast Florida buyers and sellers.

Q: What's the most common mistake buyers make with this number?

A: Treating "principal and interest" as if it were "the payment." It isn't, and the gap between the two is where I see people get into trouble — a payment that looked comfortable on the loan estimate turns out to be a couple hundred dollars higher once taxes, insurance, HOA dues, and PMI are added in. Run the whole number here first: home price, down payment, rate, and term, then the Florida-specific line items — property tax, hurricane-rated insurance, HOA, and PMI if you're under 20% down. I'd rather a buyer see the real number before they fall in love with a house than after.

Q: What actually makes up "principal and interest"?

A: The portion of your payment that goes to your lender, calculated with the standard amortization formula: M = P [ i(1+i)^n ] / [ (1+i)^n − 1 ], where P is the loan amount, i is the monthly interest rate, and n is the number of monthly payments. For a $360,000 loan at 6.5% over 30 years, that payment runs about $2,275 a month — and roughly $459,000 in interest accrues over the full life of the loan. That second figure is the one I make sure every buyer actually looks at, not just the monthly number.

Q: Why do Florida property tax bills vary so much house to house?

A: Because the rate is set locally and the exemptions are tied to how the home is used. The statewide average effective rate runs roughly 0.80%–0.90%, but the county millage rate and whether the seller had homestead protection both move the actual bill. If this will be your primary residence, claim the Florida Homestead Exemption — it reduces your taxable value by about $51,000 and caps future increases at 3% or CPI, whichever is lower.

Q: Why does Florida homeowner's insurance cost so much more than other states?

A: Hurricane exposure and litigation history, mainly. A typical single-family policy runs $2,400 to $6,000 or more a year, and older homes without wind mitigation upgrades pay toward the higher end of that range. I tell every buyer to ask for the wind mitigation report before closing — impact windows, a newer roof, and hurricane shutters can knock 20%–40% off the premium, and that's a number worth knowing before you commit to a monthly budget.

Q: Do I need flood insurance even if I'm not in a mapped flood zone?

A: Standard homeowner's policies exclude flood damage entirely, and I recommend pricing flood coverage regardless of the zone. If the property sits in a FEMA Special Flood Hazard Area (Zones AE, VE, A, or AO), your lender will require it. Roughly 40% of NFIP claims nationally come from properties outside the mapped high-risk zones, which is why I don't let a client skip this line item just because the map says they're clear. See the Florida flood zones guide for zone definitions and rate ranges.

Q: How much should I budget for HOA dues?

A: More than buyers coming from other states expect — Florida has more HOAs and condo associations per capita than almost anywhere. Monthly dues range from $25 in a deed-restricted subdivision to $1,000 or more in a high-rise condo with full amenities. Factor the actual dues into your monthly number early; they affect your debt-to-income ratio and what a lender will qualify you for.

Q: When does PMI go away?

A: Automatically at 78% loan-to-value under the federal Homeowners Protection Act, and you can request removal yourself at 80% LTV if you're current on payments and the home hasn't lost value. PMI on a conventional loan under 20% down typically costs 0.3%–1.5% of the loan amount annually — worth knowing up front, since it's not a permanent cost, just a temporary one most buyers can plan their way out of.

Q: What one-time Florida costs catch buyers off guard at closing?

A: These, most often — budget for them alongside the monthly number above:

• Documentary stamp tax on the deed — $0.70 per $100 of sale price (Miami-Dade is $0.60 plus $0.45 surtax). On a $450,000 home, that's about $3,150.
• Doc stamps and intangible tax on the mortgage — $0.35 per $100 plus 0.002% intangible. Roughly $1,980 on a $360,000 loan.
• Title insurance — usually paid by the seller in Florida, but negotiable. Promulgated rate of about 0.575% on the first $100K, then sliding down.
• 4-point inspection — most insurers require one for homes 25+ years old. $100–$200.
• Wind mitigation inspection — $75–$150, often pays for itself in insurance discounts.

Frequently asked questions