The statutory ceiling
This is the maximum. Bidders compete by bidding the rate down at the sale, so the rate you actually earn is set at the auction and is often lower. There is no statutory minimum, so a competitive bid can run the rate to zero.
A penalty on top of the interest
On redemption the owner also pays a one-time penalty that steps with the certificate amount: 2% over $200, 4% over $5,000, 6% over $10,000. It is added to the interest, not compared against it, so it does not protect a certificate bid down to a low rate.
How interest accrues
Interest runs from the date of sale at the rate the certificate was sold for, up to 18 percent a year, on the certificate amount. A premium earns nothing. A redemption within 10 days of the sale, before a certificate issues, pays only the sum paid plus interest; after that the holder's allowed expenses and any later municipal liens the holder paid are added, and those later payments earn interest at the rate the municipality charges on delinquent taxes (up to 8 percent on the first $1,500 and 18 percent above). The 2, 4 or 6 percent redemption penalty is added on top.
Why some certificates are bid to zero
The sale is struck off to whoever will take the certificate at the lowest rate of redemption interest, never above 18 percent a year. When a bidder offers less than 1 percent, or no interest at all, the bidder may offer a premium instead of any rate, and the certificate goes to whoever offers the amount due plus the highest premium. The premium earns no interest. The collector holds it and returns it to the purchaser if and when the parcel is redeemed; if there is no redemption within five years of the sale it passes to the municipality. Under P.L.2024, c.39 the premium is also refunded if, within five years of the sale, a writ of execution is sent to the county sheriff for a foreclosure sale, but not if the certificate holder is the winning bidder at that sheriff's sale. Parcels that draw no bid are struck off to the municipality at 18 percent. Not an investor sale: a municipality's separate sale of certificates it already holds (54:5-113, 54:5-114.1, 54:5-114.2), the sale of a municipality's total tax levy to a single bidder (54:5-113.5), and a county sheriff's sale that ends a certificate foreclosure are each a different event from the annual municipal tax sale, and none of them sets that sale's date.
When the certificates sell
No statewide month. Each municipality sets its own date. A standard sale enforces arrears outstanding at the close of the fiscal year and is held in the following fiscal year; the collector must prepare the list at least 50 days before it. A municipality may also hold an accelerated sale in the last month of the fiscal year. Notice is posted in five public places in the municipality and published in a local newspaper once in each of the four calendar weeks before the sale week. A municipality may run the sale electronically through a nationally recognized electronic municipal tax lien service.
The headline figure is a ceiling, not a forecast. To see what a certificate actually pays after the rate is bid down, run the numbers in the yield calculator, and compare New Jersey against other states on interest rates by state.
Verified Sep 27, 2026 against New Jersey statutes.
Tax Sale Atlas publishes educational information about public tax sale processes. This is not legal, financial, or investment advice. Rules, dates, and fees change; confirm with the county office before you bid.