An 18% Tax Lien Certificate Rarely Pays 18%
This story was drafted with AI assistance and edited by the MarketplacePro team.
Tax lien certificates get sold on a headline number. Florida’s maximum is 18 percent a year. Arizona’s is 16. Those numbers are real, but they are ceilings written into statute, and most certificates never earn them.
The reason is not hidden. It sits in three rules most investors skim past. Here they are, applied to one $1,000 Florida certificate.
The rules that set the return
- Bids go down, not up. Florida awards each certificate to the bidder who accepts the lowest interest rate, starting at 18 percent and moving in quarter-point steps.
- There is a floor. If the interest earned at redemption is less than 5 percent of the face amount, the holder gets a 5 percent minimum instead. A certificate bid at 0 percent earns nothing.
- The county takes a fee. The tax collector keeps $6.25 per redeemed certificate, and the holder is paid the redemption amount minus that fee.
And one rule you never control: the owner can redeem any time before a tax deed is issued.
Same certificate, three outcomes
To keep the math readable, interest here accrues simply by month.
Certificate A is bid at 18 percent and redeemed after 12 months. Interest is $180. Minus the $6.25 fee, you net $173.75, about 17.4 percent for the year. This is the headline case, and in a competitive sale it is the rare one.
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Certificate B is bid down to 2 percent and redeemed after 4 months. Two percent for four months is $6.67, below the floor, so you collect the $50 minimum instead. Minus the fee, you net $43.75. That is 4.4 percent in four months, or about 13 percent annualized, if you can put the money straight back to work.
Certificate C is bid at 2 percent too, but the owner takes 24 months to redeem. Interest is $40 over two years, still under the floor, so you again collect $50 and net $43.75. Same dollars as B. Spread over two years, it is about 2.2 percent a year.
B and C were identical on sale day. One returned your money in four months. The other held it for two years. Nothing in the bid told you which you would get.
What the floor really does
The 5 percent minimum flattens the early months. On a $1,000 certificate, an 18 percent bid only earns more than the $50 floor after about three months and ten days. Redeem inside that window and an 18 percent bid and a 2 percent bid pay exactly the same.
So the floor rewards fast redemptions and does nothing for slow ones. A low bid on a parcel likely to redeem quickly can beat its own rate. The same bid on a parcel that sits for years earns very little.
Other states shift the risk differently. Illinois bids down a penalty that steps up every six months: the MarketplacePro guide works through a $2,000 certificate at a 6 percent penalty that pays $120 if redeemed in the first six months and $240 in the second period. Colorado runs premium bidding, where the amount you pay above the taxes does not come back through redemption.
Before you bid
- Ask what comparable parcels in that county cleared at in the last sale, not what the statute allows.
- Model three cases: redeemed in three months, in two years, and never. If a certificate only works on the best-case date, you are betting on timing, not buying a position.
- Check what actually secures the lien: ownership, value against the lien amount, other recorded liens and condition. If nobody redeems, the property decides your outcome, not the rate.
Go deeper
The full guide to tax lien certificates covers bid-down and premium bidding, redemption windows and what happens when a lien is not redeemed, with statute links for seven states. To run the parcel checks faster, MarketplacePro’s tax lien research puts ownership, value, tax history, lien and MLS data on one record.
This story is educational and is not financial, legal or tax advice. The examples are illustrative arithmetic under current Florida statutes. Confirm rates, fees and rules with the county tax collector before you bid.
