How to Register for Online Tax Auctions: State-by-State Guide 2026

The shift to online tax auctions has made participation accessible to investors nationwide — but it has also added a layer of platform complexity that trips up first-time bidders. Miss the registration deadline by a day and you're locked out. Submit the wrong deposit format and your bid won't count. Each platform has its own quirks, and states use different platforms.

This guide covers exactly how to register on each major online auction platform used across the United States in 2026, with state-specific requirements and common pitfalls.

The Three Major Online Auction Platforms

Most online tax auctions in the US run through one of three platforms:

Platform	Primary States	Sale Types
Bid4Assets	California, Maryland, Virginia, Nevada, and others	Tax deed auctions
GovEase	Arizona, Alabama, Colorado, Louisiana, Mississippi, and others	Tax lien certificates and deeds
RealTDM	Florida (Miami-Dade and others)	Tax deed auctions

Some counties also run their own independent portals. The county DeedDrop guide for your target area will tell you exactly which platform they use.

How to Register on Bid4Assets

Bid4Assets is used for most California county tax deed auctions and several other states.

1. Create an account at bid4assets.com — name, email, and password. Email verification required.
2. Find your auction — Search by state or county. Upcoming auctions are listed on the homepage and by state page.
3. Submit your deposit — Each auction has a specific deposit requirement (typically $500–$5,000 depending on the county). The deposit is submitted via ACH bank transfer or credit card within the platform. This deposit must clear before your registration is accepted.
4. Deposit deadline — Typically 5–10 days before the auction opens. Missing this deadline locks you out. For California county auctions, watch the specific county auction page — not just the state calendar.
5. Bidding opens — Auctions run for 7–10 days with proxy bidding. Set your maximum bid and the system auto-bids for you up to your limit.
6. Anti-snipe rule — Any bid placed in the final minutes extends the auction by a set window (typically 2–4 minutes). Set a realistic max bid rather than sniping.
7. Payment after winning — Your deposit is applied to the purchase price. Pay the remainder via wire transfer within 24–48 hours of auction close. Failure to pay forfeits your deposit.

How to Register on GovEase

GovEase is the dominant platform for Arizona tax lien sales and several southeastern states.

1. Create an account at govease.com — standard registration with email verification.
2. Complete identity verification — GovEase requires ID verification (government-issued ID) before you can bid. Allow 1–3 business days for this to process.
3. Find your auction — Select your state, then the county. Each county's auction page lists the registration deadline.
4. Add funds — GovEase uses a deposit wallet system. Add funds via ACH or wire transfer before the registration deadline. For Arizona Maricopa County, minimum deposit is typically $2,500.
5. Register for the specific auction — After funding your account, register for the specific county auction you want to participate in. Registration confirmation is emailed.
6. Bidding format — Tax lien auctions on GovEase use an interest-rate bidding format: the lowest interest rate wins (competing bidders bid down the rate from the statutory maximum). For deeds, highest price wins.

How to Register on RealTDM (Florida)

Miami-Dade County and several other Florida counties use RealTDM for tax deed auctions.

1. Account creation at miami-dade.realtdm.com (or the county-specific subdomain) — name, email, password, and contact information.
2. Deposit requirement — Florida counties require a $200 deposit per property you intend to bid on. This is separate from your winning payment. You can bid on multiple properties with proportional deposits.
3. Auction format — Florida deed auctions on RealTDM are live-bidding events that run for a set window (often 1–2 hours per batch). Unlike Bid4Assets multi-day auctions, you must be available at the scheduled time.
4. Payment deadline — Winning bids require payment by the next business day. Florida statute requires payment in full; failure to pay results in forfeiture and a re-auction.

County-Run Portals

Some counties operate their own auction systems rather than using a third-party platform. These are more common in:

• Texas — Most Texas counties don't have online auctions; they're in-person courthouse sales. However, some larger counties post lists and accept pre-registration online.
• Illinois (Cook County) — The Cook County Treasurer runs the annual tax sale through a proprietary system with its own registration process, typically opening in September for a November auction.
• Georgia — County-level, often through the county Sheriff's website or a county procurement portal.
• Ohio — Varies by county; some use Realauction, others run their own portals.

Registration Timing: The Most Common Mistake

The most common way investors miss their first online auction: they start the registration process after the deposit deadline has passed.

Here is the typical timeline you need to build your calendar around:

Step	How Far Before Auction
Create platform account	Any time — do it now
Complete ID verification (GovEase)	2+ weeks before deposit deadline
Initiate ACH deposit transfer	5–7 business days before deadline
Confirm deposit received	2–3 days before deadline
Register for specific auction	Before registration close
Research target properties	3–5 weeks before auction

ACH transfers take 3–5 business days to clear. If you initiate a deposit transfer 2 days before the deadline, you will not be registered.

What to Have Ready Before You Register

• Government-issued ID (for verification steps)
• Bank account and routing number (for ACH deposits)
• Entity information if bidding as LLC/corporation (some counties require entity documents)
• Backup funding source (wire transfer capability for post-win payment)

DeedDrop's county guides include the specific platform name, registration URL, deposit amount, and deadline format for each county — so you don't have to hunt across county websites for the details.