Here is one of the most common budget shocks I see in Miami real estate. A buyer researches a property, falls in love, sees the current tax bill — say, $8,400 a year on a $1.2 million home — and factors that number into their monthly budget. They close, move in, and ten months later receive a bill for $22,000. Nothing changed. The property didn't dramatically jump in value. What happened is that the prior owner had lived there for fifteen years under the Homestead Exemption with the Save Our Homes cap locking their assessed value at roughly half of market. The new buyer resets to market — and takes the full hit.
I'm Agu Ukaogo, a Miami luxury real estate advisor and licensed insurance professional brokered through Premier Partners | Real Brokerage. My north star: Buy the home. Protect the family. Build the legacy. Understanding your true tax liability before you close is as much a part of protecting your family as having the right insurance policy. This guide breaks down everything you need to know about Miami-Dade property taxes — how the system works, which exemptions you qualify for, how to transfer savings from your prior home through portability, and how to fight back if your assessment comes in wrong.
How Florida Property Taxes Work
Florida property taxes are administered at the county level. Miami-Dade County's Property Appraiser's Office determines the assessed value of every taxable property in the county. The Florida Department of Revenue sets the framework and oversight rules, but the millage rates — the rates multiplied against your assessed value to produce your tax bill — are set locally by your municipality, county commission, school board, and any special taxing districts that apply to your address.
Florida's tax year runs on the calendar year. The assessed value used to calculate your bill is the value as of January 1 of that year. Tax bills are mailed in late October or early November, with a payment deadline of March 31 the following year. Florida rewards early payment with a tiered discount: 4% if paid in November, 3% in December, 2% in January, and 1% in February. Most sophisticated buyers pay in November and pocket that 4%.
The most important concept in Florida property taxation — and the one that creates the most confusion for new buyers — is the difference between three values:
- Just Value: Market value as determined by the Property Appraiser. This is what the property is actually worth in an arm's-length sale.
- Assessed Value: The value used for tax calculation, which may be capped below just value for homesteaded properties through the Save Our Homes cap.
- Taxable Value: Assessed value minus any exemptions (Homestead, senior, disability, veteran, etc.). This is the number your millage rate is applied to.
Your tax bill is based on taxable value — not market value. But when you purchase a home, the assessed value resets to just value starting the January 1 after your closing. The prior owner's years of cap savings evaporate the moment the deed transfers to you.
When you buy in Florida, the current owner's Save Our Homes cap does NOT carry over to you. The Property Appraiser reassesses the property at or near your purchase price for the January 1 following closing. Budget your taxes based on current market value, not the seller's old bill — the difference can be significant enough to change your monthly payment calculation by $1,000 or more.
Millage Rates in Miami-Dade County
Your millage rate is the combined total of every taxing authority with jurisdiction over your parcel — the county general fund, your city or municipality, the school district, the South Florida Water Management District, the Children's Trust, and any applicable special districts. One mill equals $1 of tax per $1,000 of taxable value.
In Miami-Dade for 2025–2026, combined millage rates for major municipalities look approximately like this:
| Municipality | Approx. Combined Millage | Annual Tax on $1M Taxable Value |
|---|---|---|
| Unincorporated Miami-Dade | ~19.5–20.5 mills | ~$19,500–$20,500 |
| City of Miami (Brickell, Edgewater, Downtown) | ~21–22 mills | ~$21,000–$22,000 |
| Coral Gables | ~18–19 mills | ~$18,000–$19,000 |
| Key Biscayne | ~16–17 mills | ~$16,000–$17,000 |
| Pinecrest (Unincorporated) | ~19.5–20.5 mills | ~$19,500–$20,500 |
| Miami Beach | ~19–20 mills | ~$19,000–$20,000 |
| Aventura | ~20–21 mills | ~$20,000–$21,000 |
| Coconut Grove (City of Miami) | ~21–22 mills | ~$21,000–$22,000 |
These are approximations — millage rates shift annually as each taxing authority sets its budget. Before we write an offer on any property, I pull the exact millage breakdown for the specific parcel so your budget is accurate at the address level, not just the neighborhood average.
How Your Property Is Assessed
Miami-Dade's Property Appraiser assesses every property annually as of January 1. For residential properties, the appraiser primarily uses the sales comparison approach — comparing recent arm's-length sales of similar properties to arrive at just value. For most new buyers, the purchase price itself is strong evidence of just value, particularly when the sale was open-market and the property hasn't been substantially altered since closing.
The reassessment timing matters. If you close in November 2026, the January 1, 2026 assessed value is still based on the prior owner's values — and you receive the benefit of their lower bill for that one final year. But the January 1, 2027 assessment will reflect your purchase price, and that is the bill that hits your mailbox in late 2027.
One common misconception: buyers sometimes assume the Property Appraiser will assess below their purchase price because the market "feels" soft. In practice, the appraiser uses your recorded sale price as a primary benchmark. If you paid $2.3 million, expect an assessed value near $2.3 million for the first year, before your exemptions apply.
The Homestead Exemption & Save Our Homes Cap
The Homestead Exemption and the Save Our Homes (SOH) cap together form the most powerful long-term property tax strategy available to Florida homeowners. They work in tandem, and understanding both is essential before you commit to any primary residence purchase in Miami.
The Homestead Exemption
If your property is your primary Florida residence as of January 1, you are eligible for the Homestead Exemption — but you must file the application with the Miami-Dade Property Appraiser by March 1 of the first year you want to receive it. The exemption reduces your assessed value in two tiers:
- First $25,000: Exempt from all property taxes, including school district levies. Applies to assessed values between $0 and $25,000.
- Second $25,000: Exempt from all property taxes except school district levies. Applies to assessed values between $50,000 and $75,000.
On a $2 million Miami home assessed at $2 million and taxed at 20 mills, the current $50,000 exemption saves roughly $1,000 per year. That is not a transformative number at the luxury level. What transforms the equation is the SOH cap — and the coming expansion of the exemption itself.
Florida's legislature has passed a constitutional amendment, pending voter approval and phased implementation, that would increase the Homestead Exemption to $250,000 by 2028. At a 20-mill rate, that full $250,000 exemption represents roughly $5,000 in annual tax savings — a meaningful number that compounds over time. Buyers establishing homestead in 2026 will be perfectly positioned to benefit as the phased increase rolls out.
The Save Our Homes Cap
Once you receive the Homestead Exemption, Florida law caps the annual increase in your assessed value at 3% or the percentage change in the Consumer Price Index, whichever is lower. This is the Save Our Homes cap, and over time it is often worth far more than the base exemption itself.
Consider this: Miami-Dade home values have appreciated substantially over the past decade. A homeowner who purchased in 2012 for $800,000 and has held through a market where the home is now worth $3 million is not paying taxes on $3 million. They may be paying taxes on an assessed value of $1.1 million or $1.2 million because the SOH cap limited their assessment increases to 3% or CPI each year. That gap represents over $36,000 per year in tax savings at a 20-mill rate.
The important reality for buyers: that cap is personal to the owner. When you purchase that same home at $3 million, your assessed value resets to $3 million starting January 1 of the following year. The SOH cap begins accumulating for you from year one of your homestead — but you start from the top of the market, not from where the prior owner started fifteen years ago. The long-term protection is real; it just takes time to build.
Other Exemptions Available to Miami Homeowners
Beyond the standard Homestead Exemption, Florida law provides several additional exemptions that may significantly reduce your tax burden depending on your personal circumstances:
- Senior Citizen Additional Exemption: Homeowners 65 and older with household income below the annual threshold (approximately $35,167 in recent years) may qualify for an additional $50,000 exemption from county and some municipal levies. Certain municipalities offer even greater additional senior exemptions by local ordinance.
- Total and Permanent Disability Exemption: Homeowners who are totally and permanently disabled may qualify for a full exemption from all ad valorem taxes on their homestead. This is one of the strongest protections in Florida tax law.
- Veteran's Disability Exemption: Honorably discharged veterans with a service-connected disability of 10% or more receive a $5,000 additional exemption. Veterans with a 100% service-connected total and permanent disability may qualify for a full exemption on their homestead property.
- First Responder Total Disability Exemption: First responders totally and permanently disabled as a result of an in-the-line-of-duty injury are exempt from all ad valorem taxes on their homestead.
- Widow/Widower Exemption: A $500 additional exemption is available to qualifying surviving spouses who have not remarried.
- Deployed Military Exemption: Active duty members of the military deployed outside the United States during any portion of the calendar year may qualify for an additional exemption proportional to their deployment days.
All of these exemptions require a timely application with the Miami-Dade Property Appraiser's Office. The standard deadline is March 1. I remind every buyer I work with: as soon as you close and establish Florida residency, get your exemption applications filed. The window is shorter than most people expect, and missing it means waiting an entire additional year.
How to Appeal Your Property Tax Assessment
Your right to challenge your assessed value through the Miami-Dade Value Adjustment Board is one of the most underused financial tools available to homeowners — particularly at the luxury level, where a successful appeal can mean $5,000 to $25,000 in annual savings.
The process starts with your TRIM notice — Truth in Millage — which arrives in August. It shows your proposed assessed value, the proposed millage rates, and your estimated tax bill. It also states the exact deadline to file a VAB petition, typically September 18.
- Review your TRIM notice the day it arrives. Confirm that property classification, exemptions, and proposed value all appear correct. Errors at this stage are common on newly transferred properties.
- Pull comparable sales data immediately. The Property Appraiser must base your assessed value on arm's-length market evidence. If recent comparable sales suggest your value is overstated, you have grounds for appeal. I can pull this data for clients navigating this process.
- File your VAB petition before the deadline — no exceptions. The filing fee is approximately $15 per parcel. There is no late filing mechanism. Miss the date and you wait until next year.
- Consider professional representation for luxury properties. Property tax attorneys and licensed tax agents often work on contingency — a percentage of the tax savings they achieve. For a $3 million property where a successful appeal saves $8,000 per year, that ROI is compelling even after a professional fee.
- Prepare your evidence clearly for the hearing. The VAB magistrate is looking for documented comparable sales, preferably three to five recent arm's-length transactions of genuinely similar properties, presented in a straightforward format.
- Know what you cannot appeal. Millage rates are set by the taxing authorities and are not subject to VAB appeal. You can only challenge the assessed value or the denial of an exemption. If the value is correct but the rate feels high, the remedy is the ballot box, not the VAB.
If you are selling a Florida homestead property and buying another, you may transfer up to $500,000 of accumulated Save Our Homes benefit to your new home. This is called portability, and it requires filing Form DR-501T with the Property Appraiser within three years of your prior home's sale. For long-time Florida homeowners selling a home with significant SOH savings, portability can reduce assessed value at the new property by hundreds of thousands of dollars from day one — translating to thousands in annual tax savings. Don't leave this on the table.
What Happens to Taxes When You Buy a Property in Miami?
At closing, taxes are typically prorated based on the prior year's bill or a current estimate. The seller pays their share through the closing date; you take responsibility from that date forward. Standard. But what matters more is what happens in the twelve months after you close.
Here is the exact timeline every Miami buyer needs to internalize:
- Year of purchase (e.g., 2026): The property is still assessed at the prior owner's January 1, 2026 assessed value — potentially far below your purchase price if they had long-term SOH protection. You may receive an advantageously low tax bill for this final year.
- January 1 of the following year (2027): The Property Appraiser reassesses the property using your purchase price as primary evidence of just value. Your assessed value resets.
- March 1, 2027: Deadline to file your Homestead Exemption application if you want it to apply to the 2027 tax year. Do not miss this date.
- August 2027: Your TRIM notice arrives showing proposed assessed value for 2027 and estimated taxes. Review it carefully and appeal if warranted before the September deadline.
- October/November 2027: Your first full post-purchase tax bill arrives. Budget for this number — not the bill from before you bought.
- Every subsequent year: With Homestead in place, your assessed value can only rise 3% or CPI. The SOH cap begins working in your favor and compounds over time.
The practical takeaway: if you are buying a resale property where the seller has been there for a decade or more, do not use their tax bill as your budget baseline. Take your purchase price, apply the applicable millage rate, subtract your exemptions, and that is your real year-two tax liability. I build this calculation for every client before we submit an offer.
The True Annual Cost of Property Taxes on Miami Luxury Homes
Let me make this concrete. Below are realistic first-year property tax estimates for Miami luxury buyers at various price points, assuming a 20-mill combined rate, a new-purchase assessed value reset, and the current $50,000 homestead exemption structure. These are approximations — your specific municipality and parcel may differ.
| Purchase Price | Taxable Value (After Exemption) | Est. Annual Tax (20 mills) | Monthly Tax Cost |
|---|---|---|---|
| $1,000,000 | ~$950,000 | ~$19,000 | ~$1,583 |
| $1,500,000 | ~$1,450,000 | ~$29,000 | ~$2,417 |
| $2,000,000 | ~$1,950,000 | ~$39,000 | ~$3,250 |
| $3,000,000 | ~$2,950,000 | ~$59,000 | ~$4,917 |
| $5,000,000 | ~$4,950,000 | ~$99,000 | ~$8,250 |
| $10,000,000 | ~$9,950,000 | ~$199,000 | ~$16,583 |
Stack these numbers on top of your HOA dues, homeowners insurance, windstorm coverage, and flood insurance, and the full monthly carrying cost for a $3 million luxury condo in Brickell or Edgewater can land between $8,000 and $14,000 per month before your mortgage payment. That is not a number to discover after closing. It is a number to know before you fall in love with the property — which is why I build this picture for every client I work with.
For more on the Homestead Exemption and how to maximize it, see my companion guide: Florida Homestead Exemption Explained. And if you're actively researching Miami luxury properties, start with the Miami Luxury Homes overview for neighborhood-by-neighborhood context. More market intelligence is available on the blog.
Know Your Real Tax Number Before You Make an Offer
I'll run the actual post-purchase tax estimate for any Miami property you're considering — plus the full monthly carrying cost picture including insurance and HOA — before you commit. No surprises after closing.
FAQ — Miami Property Taxes
How are property taxes calculated in Miami-Dade County?
Miami-Dade property taxes are calculated by applying the combined millage rate for your tax district to your taxable value — assessed value minus any exemptions you qualify for. The combined millage rate includes the county general fund, your city or municipality, the school board, and any applicable special taxing districts. Most Miami-Dade addresses fall between 18 and 22 mills. One mill equals $1 per $1,000 of taxable value, so at 20 mills, a $1 million taxable value produces a $20,000 annual bill. The rate varies by address, not just neighborhood, which is why I pull the exact parcel-level millage before finalizing your carrying cost budget.
What is the Florida Homestead Exemption and how much does it save?
The Florida Homestead Exemption reduces your assessed value for tax purposes if you file by March 1 and the property is your primary Florida residence. The current exemption is $50,000 in two tiers — one that applies to all taxes and one that applies to all taxes except school levies. Florida's legislature has also approved a phased increase that will bring the exemption to $250,000 by 2028, which will deliver roughly $5,000 in additional annual savings at a 20-mill rate. Beyond the dollar exemption, Homestead status activates the Save Our Homes cap, which limits your assessment increase to 3% or CPI per year — often the most valuable long-term protection for buyers who establish roots and stay.
What happens to property taxes when I buy a home in Miami?
When you purchase a Miami property, the Miami-Dade Property Appraiser reassesses it at or near your purchase price for January 1 of the year following your closing. The prior owner's Save Our Homes cap does not carry over to you. The current tax bill on a resale home — especially one owned for many years — often reflects an assessed value far below market, which has nothing to do with what you will pay. Budget based on your purchase price multiplied by the applicable millage rate, minus your own exemptions. I build this number for every client before we write an offer because it is the most common financial surprise in Miami residential real estate, and it should never be a surprise.
Can I appeal my property tax assessment in Miami-Dade?
Yes, and more homeowners should. You can file a petition with the Miami-Dade Value Adjustment Board before the September deadline (typically September 18) following your August TRIM notice. Appeals can be filed on the grounds that your assessed value exceeds market value, that an exemption was improperly denied, or that the property was incorrectly classified. For luxury properties, the economics of professional representation are almost always favorable — a property tax attorney working on contingency can often save more than their fee in the first year alone. Don't wait for the bill to feel wrong. Review every TRIM notice the day it arrives.
The Bottom Line on Miami Property Taxes
Miami's property tax system is genuinely favorable for long-term homeowners — the Save Our Homes cap, the Homestead Exemption expansion, and portability are powerful tools that reward people who plant roots here. But the system is absolutely unforgiving for buyers who don't understand the purchase reset. The gap between what the seller pays and what you will pay can be thousands of dollars per month, and that gap is not always visible in the listing information.
My job is to make sure you walk into every purchase knowing the real number. Not the current owner's number. Not the county's website estimate. The actual tax liability you will face starting the year after your closing, combined with insurance, HOA, and every other carrying cost that determines whether this purchase is a financial asset or a financial strain. That is how I honor the commitment behind Buy the home. Protect the family. Build the legacy.
Call me at (954) 702-4688, reach out through HomeWithAgu.com, or browse the blog for more South Florida buyer intelligence. Let's make sure you close on this purchase with your eyes fully open and your budget fully accurate.
Let's Build the Complete Picture Before You Buy
One call. I'll give you the real taxes, real insurance costs, real HOA picture, and real monthly carrying cost for any Miami property you're considering. No pressure, no guesswork — just the numbers you need to decide with confidence.
Agu Ukaogo
South Florida Luxury Realtor & Wealth Protection Strategist. FL Real Estate License SL3588365 | Insurance NPN 22138920 | Brokered by Premier Partners | Real Brokerage. HomeWithAgu.com · (954) 702-4688