July 27, 2026
Master Florida real estate exam math with step-by-step practice problems covering prorations, doc stamps, commissions, cap rate, GRM, and more.
Florida real estate math questions account for roughly 10% of the sales associate exam, and every single one can be solved with the right formula applied in the right order. The candidates who struggle are not bad at math — they are skipping steps. This guide walks through worked examples for every major math category you will encounter, showing each calculation in full so you understand the method, not just the answer. Bookmark the formula sheet to use alongside this post.
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Math makes up about 10% of the Florida real estate sales associate exam — roughly 10 out of 100 questions. The most common categories are documentary stamp taxes, prorations, commissions, LTV, cap rate, and GRM. Every problem can be solved by applying the right formula in the right order.
Documentary stamp tax on deeds is charged at $0.70 per $100 of consideration (or any fraction thereof) everywhere in Florida except Miami-Dade County, where the rate is $0.60 per $100 plus a $0.45 surtax on non-single-family properties (totaling $1.05 per $100), while single-family properties in Miami-Dade pay only $0.60 per $100 with no surtax.
A property sells for $347,500 in Orange County. What is the documentary stamp tax on the deed?
If the price were $347,501, you would round up to 3,476 units before multiplying — the tax applies to every fraction of $100.
A new mortgage triggers two separate charges: a documentary stamp tax of $0.35 per $100 on the promissory note, and an intangible tax of $0.002 per $1 (0.2%) on the mortgage amount.
A buyer obtains a new mortgage of $280,000. Calculate both taxes.
Prorations split prepaid or accrued expenses between buyer and seller as of the closing date. Florida exams typically use a 365-day year and actual calendar days (e.g., January = 31, February = 28, etc.) unless the question specifically states otherwise — a 30-day-month/360-day-year banker's year is used only when the question explicitly calls for it. Always confirm with the problem, and follow whatever closing-day convention the question states, as there is no fixed universal default for who owns the closing day.
Annual property taxes of $3,650 have not yet been paid. Closing is on September 15. The seller owes taxes from January 1 through September 15. How much does the seller owe at closing?
Commission problems often involve multiple splits: the listing brokerage and selling brokerage each get a share, then the sales associate gets a percentage of their broker's share.
A home sells for $415,000 at a 6% total commission. The commission is split 50/50 between the listing and selling brokerages. The listing sales associate receives 60% of their broker's portion. What does the listing sales associate earn?
LTV expresses the loan amount as a percentage of the property's appraised value or purchase price, whichever is lower.
A buyer purchases a home for $325,000 with a $260,000 mortgage. What is the LTV?
Cap rate is used to value income-producing properties. The formula is: Cap Rate = Net Operating Income ÷ Value. You can rearrange to solve for any one of the three variables.
An apartment building generates a net operating income of $52,000 per year. Similar properties in the area sell at a 6.5% cap rate. What is the estimated value?
GRM is a quick valuation tool based on gross (not net) rental income. Formula: GRM = Sales Price ÷ Gross Annual Rent.
A fourplex sells for $480,000 and generates $48,000 in gross annual rent. A comparable property has an annual gross rent of $54,000. Using the same GRM, estimate the comparable's value.
Every problem above follows a formula. If you have not already saved the formula sheet, do that now. It covers all the equations tested on the exam in a printable format. You can also review the full list of 19 exam topics to make sure math fits into your broader study plan, and check the glossary for definitions of terms like NOI, GRM, and LTV.
AhaPrep at ahaprep.com includes timed practice questions that mirror the format and difficulty of the actual Florida sales associate exam, including math problems with immediate feedback and explanations. Working through problems repeatedly under exam conditions is the fastest way to build the speed and accuracy you need on test day.
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