How online county tax auctions work, step by step
From the registration packet to the deed: what bidding on a tax-foreclosed property online actually takes, and what it really costs.
7 minute read. Checked November 5, 2026.
Who runs them
Most Upstate counties now sell their tax-foreclosed property online through an auction company such as Auctions International. Albany County, for example, held spring, summer and fall online auctions in 2026. Each county sets its own terms, so the details below are examples — always read the terms for the auction you're in.
The steps
Find the auction and its catalog
Each listing shows the parcels, opening and closing dates, and the terms of sale. Our Auctions page lists what's coming up.
Make a bidder account
Sign up on the auction company's site. Expect to give a card to verify who you are.
Send that auction's registration packet
Every auction has its own packet and deadline — you fill out a new one even if you've bid before. Late packets usually aren't accepted.
Research every parcel you like
Check the tax map, zoning, road access, utilities, flood zone and anything that stays with the property, like easements. You usually can't go inside, so drive by and look.
Set your top price — with fees
Decide the most you'll pay before bidding opens, counting the buyer's premium, deposit, filing fees, repairs and taxes.
Bid
Lots usually close one after another on the last day. A bid near the end extends the clock (soft close), so the price can keep moving. Bids can't be taken back.
Pay the deposit right away
Winners usually pay a deposit, the buyer's premium and fees within days. Small bids are often paid in full.
Pay the rest and close
The county's attorney prepares the deed after you pay the balance. You're responsible for taxes from then on — tell the tax collectors where to send the bills.
What it really costs: an example
Cayuga County's 2025 terms on Auctions International show how fast it adds up. On a $10,000 winning bid paid by card:
| Amount | |
|---|---|
| Deposit (20% of the bid) | $2,000 |
| Buyer's premium (12.77% by card) | $1,277 |
| Administrative fee | $200 |
| Due right after the auction | $3,477 |
Then the other $8,000 of the bid comes due at closing. Paying with certified funds lowered that county's buyer's premium to 10%. Other auctions add filing fees and New York's transfer tax ($2 for every $500 of the price), or require a minimum deposit such as $2,500.
Mistakes that cost people
- Missing the registration packet deadline.
- Bidding on a sliver of land with no road access, or a lot too small to build on.
- Forgetting the buyer's premium and fees when setting a top price.
- Not paying on time. Defaulting can mean losing your deposit, extra fees and being banned from future auctions.
This is general education, not legal advice. Every county writes its own terms of sale.
Sources
- Cayuga County 2025 auction terms and bidder certification (opens in a new tab)
- City of North Tonawanda 2025 tax auction catalog (opens in a new tab)
- Albany County 2026 online tax foreclosure auctions (Auctions International) (opens in a new tab)
- Tompkins County 2025 auction terms (soft close, no retracting bids) (opens in a new tab)