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Many bidders assume one signed form covers any IRS sale, then learn the sale notice decides everything. Form 12673 is the IRS Agreement to Bid, a one-page contract (Rev. 8-2016, Catalog No. 29514X) you sign before a U.S. Government public sale of seized or surplus property, and it applies only when the notice calls for an agreement to bid.
Sign it and you commit to bid at least the minimum-bid amount you enter, within the days the form specifies, with your deposit credited against the price if you win. For routine mail-in auctions the IRS usually uses Form 14731 instead. And on real estate sold after seizure, a 180-day right of redemption follows, with redemption priced at the purchase price plus interest at 20 percent per year, compounded daily.
Key Takeaways
- Form 12673 is a one‑page Agreement to Bid issued by the IRS, revision 8‑2016. Use it only when the sale notice requires an “agreement to bid,” often tied to redemption or guaranteed bid procedures.
- The sale notice controls how to submit bids. Many IRS seized property auctions still rely on paper or in‑person processes. The IRS public guidance allows a notice to specify a physical or online address for submission, so verify your notice.
- For routine public auctions that allow mail‑in participation, the IRS typically uses Form 14731 or 14731‑A, not Form 12673. Your bid must be received by the due date at the address shown, not merely postmarked.
- Real estate sold after seizure carries a 180‑day right of redemption under federal law, and redemption requires paying the purchase price plus interest at 20 percent per year, compounded daily. Plan for that window.
- Download the official Form 12673 PDF directly from IRS.gov. Confirm you have the August 2016 version before you print and sign.
What Form 12673 is, and when you actually need it
Form 12673, Agreement to Bid, is the IRS’s short contract that says, in plain terms, you agree to bid at least a stated amount on the described property within a defined time. You include a deposit, you identify the specific property, and you sign that you understand the consequences if you do not honor your bid. You will see this form when the sale officer or notice calls for a guaranteed or redemption‑related bid, which is different from a typical mail‑in public auction bid.
A quick sanity check helps:
- If you are responding to a standard public auction with optional mail‑in bidding, the IRS usually provides a mail‑in bid form, Form 14731 or 14731‑A. That is not Form 12673, and the rules for withdrawal and timing can differ. Read the notice closely.
- If the notice or the sale officer asks for an Agreement to Bid and references a deposit calculation tied to a guaranteed minimum, you are in Form 12673 territory. Expect strict consequences if you default.
Why the confusion around “paper only” versus online?
Most IRS seized property sale processes still rely on paper, in‑person auctions, or mail‑in bids that are opened at the start of the sale. The IRS auctions site confirms that online bidding is not generally available for IRS seized property, and notes that online bidding applies to GSA sales instead. Your notice is the controlling document, so do not assume email or web upload is accepted unless your notice explicitly says so.
At the same time, the IRS’s public guidance now allows a notice to specify a physical or online address for bid and remittance submission. That means a particular sale could instruct you to send materials to a designated online location. Trust the notice you are working from, not a generic checklist.
Where to get the official Form 12673 PDF
You should only download the Agreement to Bid from the IRS. The official PDF is one page, shows “Form 12673 (Rev. 8‑2016),” and is labeled Agreement to Bid. Third‑party sites often mirror IRS forms, but you should verify your copy against IRS.gov before you print and sign.
- Confirm the header reads “Form 12673 (Rev. 8‑2016).”
- Open the file in a trusted PDF reader to check that text fields are fillable.
- Print on standard letter paper and keep a clean copy for your records.
| Source | What to do |
| IRS Form 12673 PDF | Download, confirm the 8‑2016 revision, and print. |
| Sale notice | Follow its required submission method, address, and deadlines. |
| IRS auctions guidance | Cross‑check whether mail‑in or in‑person bidding applies to your sale. |
Trust signal. The IRS forms index still lists Form 12673 with an August 2016 revision date, which matches the PDF you should use.
Paper, timing, and the “receipt vs postmark” rule
Timing kills bids. The IRS treats the sale notice deadline as a receipt deadline in mail‑in contexts, which means your bid must arrive at the address listed by the due date to be considered. Do not rely on a postmark unless the notice says otherwise. The IRS also documents each mail‑in bid as it is received, so tracked delivery is not optional, it is smart risk control.
- Use a traceable courier that the notice permits.
- Target arrival at least one business day early.
- Keep proof of delivery with your copy of the form.
Editorial note for firms. If your accounting firm supports clients who bid at IRS sales, document how you calculate deposits, confirm identities, and calendar the receipt deadline. Treat it like any compliance filing, not a casual package send. Accountably’s delivery teams build these controls into checklists so nothing slips during crunch time. Mention us only if it helps a reader, and only where the process truly benefits from structure.
Step by step, how to complete Form 12673
You can fill the PDF electronically, then print and sign with wet ink. Keep your entries clean and specific. Here is a simple checklist.
Your identity and contact details
- Full legal name, as it appears on your government ID.
- Current mailing address, city, state, and ZIP code.
- A reliable phone number where you can be reached.
The IRS uses these details for correspondence and for validating your bid paperwork. Incomplete or illegible identity data can stall or sink your submission.
The property you are agreeing to bid on
Form 12673 is drafted for one property at a time. You will enter the legal property description and the property address, and you may attach additional pages if the legal description is lengthy. Use the identifiers from the sale notice so the IRS can match your agreement to the right asset. In practice, you should complete one Form 12673 per property you are agreeing to bid on.
- Copy the legal description precisely, including parcel, lot, book, and page references.
- Include the full street address, city, state, and ZIP code when available.
- If the notice provides an IRS property or lot number, include that in your attachment.
Your Guaranteed Bid and deposit
The body of the form captures two key numbers, your minimum bid amount and the enclosed deposit. The language on the form states that if you fail to bid at least the amount specified and the property is not sold for at least that amount within the stated time, your deposit may be retained pending a determination of damages, and you can be liable for any excess. In short, do not sign this form lightly.
Practical tip:
- Align your deposit with the percentage or dollar amount described in the sale notice for an agreement to bid. If the notice specifies 20 percent, calculate based on your guaranteed bid and include a cashier’s check in that amount.
Signature and dating, wet ink only
Print the filled PDF, sign, and date. Use a consistent ink signature that matches your ID. Unless your sale notice explicitly permits an online method, do not email or upload this form, and do not fax it. For most IRS seized property auctions, online bidding is not available, and sale officers open mail‑in items at the start of the sale. The notice controls, so if it says physical or online address, follow that exact instruction.
Where to send it, and how fast
The sale notice tells you the exact address, and sometimes the permitted delivery methods and office hours. Plan your delivery so the package is received by the deadline, not just postmarked. The IRS instructs that mail‑in bids are considered only if they arrive by the due date at the specified address. Use tracked delivery and keep a clean copy of everything you send.
What happens after you send Form 12673
- The IRS reviews your Agreement to Bid and deposit in line with the sale plan. Remember that the Government reserves the right to reject any and all bids and to withdraw the property from sale, so signing does not obligate the Government to sell to you or to accept your bid.
- If the property is not offered for sale within the time window specified on the form, the agreement is void. If it is offered and you do not bid at least your guaranteed amount, your deposit can be held while damages are assessed, and you may owe more than the deposit.
- If you participate in a public auction that also accepts mail‑in bids, the IRS opens those mail‑ins at the start of bidding for the relevant lot, then proceeds under the sale procedures.
Do not mix up Form 12673 with the IRS mail‑in bid forms
Here is the practical split that keeps bidders out of trouble.
- Agreement to Bid, Form 12673. This is the commitment form used when the notice requires a guaranteed or redemption‑related bid and deposit. It is a short contract with penalties if you do not perform.
- Mail‑in bids for public auctions. When a public auction allows mail‑in participation, the IRS uses Form 14731, Ranged Mail‑in Bid for Public Auction Sale, or Optional Form 14731‑A, Fixed Mail‑in Bid. Those have their own instructions, receipt deadlines, and documented handling on arrival.
If your notice mentions a “sealed bid sale,” you will see different IRS sale documents and payment steps. Follow the notice word for word.
The 180‑day redemption window on real estate, and why it matters
If the IRS sells real property after seizure, the owner and certain other parties have a federal right to redeem the property within 180 days after the sale. To redeem, they pay the purchaser the purchase price plus interest at 20 percent per year, compounded daily. That redemption right can change the risk profile of your investment, your insurance, and your plans for renovation or occupancy. Price accordingly and know how you will handle the property during the redemption period.
- Expect constraints on changing or occupying the property before the redemption period ends.
- Discuss property protection and maintenance responsibilities with the sale officer and refer to the IRS guidance on protecting real property during redemption.
Note. Some redemption procedures differ if the United States becomes the purchaser at the sale, including a separate two‑year provision under IRC 7506 when the government holds the property. These are specialized situations, so consult the sale officer and, if needed, counsel.
Common mistakes that get Form 12673 rejected or put you at risk
Most Form 12673 problems are not exotic. They come from treating a signed bid commitment like a routine form, and from skipping the fields that carry real legal weight.
Timeline and submission planning
The inverted pyramid approach helps when the clock is tight.
- Confirm the form you need
- Agreement to Bid requested in the notice, use Form 12673.
- Mail‑in public auction option, use the IRS mail‑in bid form provided with the notice.
- Assemble details
- Your legal name and contact information.
- Legal property description and address.
- Deposit amount and instrument that meets the notice terms.
- Prepare and sign
- Fill the PDF, then print.
- Sign and date with wet ink.
- Package your deposit securely.
- Deliver with margin
- Use a tracked method the notice permits.
- Target arrival at least one business day early.
- Keep proof of delivery.
Quick planning table
| Step | Your action | Why it matters |
| Identify the correct form | Match the notice requirement to Form 12673 or the mail‑in bid form | Using the wrong form can invalidate your bid. |
| Verify property identifiers | Copy legal description and address exactly | Prevents misallocation of your bid. |
| Calculate deposit | Align with the percentage or fixed amount in the notice | Underfunded deposits risk rejection. |
| Choose delivery method | Follow notice instructions on mail or hand delivery | The IRS considers bids only if received by the due date. |
| Document everything | Keep form copy, deposit proof, and tracking | Supports follow‑up if questions arise. |
First‑time bidder tips that save time and money
- Read the sale notice twice. Circle the form you must use, the deposit rules, and the exact address and deadline.
- Price in the redemption risk for real estate. Even if you expect no redemption, carry the cost of that risk in your bid model.
- Use a checklist. Identity, property description, bid amount, deposit, signature, and tracked delivery. If you work in a team, assign each item to a person and verify.
- Communicate early. If you are unsure about identifiers, delivery rules, or pickup procedures, ask the sale officer before you send your materials.
- Treat third‑party “fillable” sites with caution. Always confirm your form against IRS.gov before you print and sign.
What‑How‑Wow framework for Form 12673
- What. Form 12673 is a signed promise to bid at least a stated amount on a specific property, typically used when the IRS requests an agreement to bid.
- How. Download the official 8‑2016 PDF from IRS.gov, fill it, print, sign in ink, enclose the deposit the notice specifies, then deliver it to the exact address by the due date. Keep proof of delivery.
- Wow. Small procedural details move big dollars. Getting the receipt deadline, the right form, and the deposit instrument correct is often the difference between a successful bid and a missed opportunity. The IRS sale process is rule driven, so your checklists and timing habits are your edge.
Compliance and trust signals
- IRS official sources cited in this guide include the Agreement to Bid PDF, the seized property sale procedures in the Internal Revenue Manual, and the IRS auctions site. The IRM sections cited here were updated through September 3, 2025, and the forms index still shows the 8‑2016 revision for Form 12673 as of August 6, 2025. Always confirm the sale notice you are following.
- Bidding logistics evolve. The Internal Revenue Bulletin reflects that a notice may specify a physical or online address for submission, which means a future sale could use a secure online method. Your notice is the single source of truth.
Mini disclosure
This article is educational, and the IRS controls procedures through code, regulations, manuals, and sale notices. For legal advice, consult your counsel. For questions about a specific sale, contact the sale officer listed in the notice.
A quick printable checklist
- Download the official Form 12673 PDF, confirm “Rev. 8‑2016,” and fill it neatly.
- Copy the full legal description and address for the property, attach a page if needed.
- Calculate the deposit exactly as the notice states, prepare the instrument the notice requires.
- Print, sign with wet ink, and package securely with your deposit.
- Deliver to the exact address in the notice, plan for receipt by the due date, and keep tracking.
- Calendar the sale date, payment deadlines, pickup procedures, and, for real estate, the 180‑day redemption end date.
Final word
You do not need to love paperwork to handle Form 12673 well. You just need to follow the notice, fill the official IRS PDF cleanly, include the correct deposit, and ship it with enough time to arrive before the deadline. Respect the 180‑day redemption window on real estate, and know which bid framework you are in, Agreement to Bid versus standard mail‑in. Do that, and you give yourself a real shot at a clean win on sale day.
If you run a CPA or EA firm that supports clients through IRS sales, build a small, repeatable delivery system around these steps. The right SOPs reduce rework, prevent last‑minute scrambles, and protect margins in a compliance‑heavy process. That structure is the kind of quiet advantage our team at Accountably helps firms implement when the work needs to scale without quality loss.
Reusable Checklists
These are copy-paste ready for a firm SOP. Drop them into your workpaper template and run them every time a client signs an Agreement to Bid.
Pre-signature review
- Confirm the header reads Form 12673 (Rev. 8-2016), Catalog No. 29514X.
- Match the property address and legal description to the sale notice, word for word.
- Attach a labeled continuation page if the legal description runs long.
- Enter the minimum-bid amount the bidder commits to.
- Enter the deposit amount and confirm the funding source.
- Enter the number of days within which the property must be offered for sale.
- Complete every Bidder Information field: name, telephone, street, city, state, ZIP.
- Collect a wet-ink signature and the date.
Default-risk and deposit scan
- Confirm the deposit is credited against the price only if the bidder is the successful bidder.
- Document that the deposit is retained pending a damages determination if the bidder defaults.
- Note that the bidder is personally liable for damages above the deposit amount.
- Stress-test the guaranteed bid against the bidder’s available funds.
- Record that the Government may reject any bid or withdraw the property from sale.
- Flag that the agreement voids if no sale is offered within the stated offer window.
Submission and recordkeeping
- Follow the submission address and method named in the sale notice.
- Plan delivery so materials arrive by the deadline named in the notice.
- Use a traceable courier the notice permits and keep proof of delivery.
- Keep a clean signed copy of the form and any attachments.
- Calendar the offer window so the team knows when the agreement voids.
- Do not email, fax, or upload the form unless the notice explicitly allows it.
Keep 12673 Season From Stalling
Form 12673 does not run on a tax calendar. It shows up one sale notice at a time, each with its own receipt deadline, its own deposit math, and a signed commitment that carries personal liability if the bidder defaults, per the Agreement to Bid text published on IRS.gov. For a team supporting clients who bid at IRS public sales, the pressure is not volume, it is precision under a hard deadline.
The fix is the same discipline that protects any high-stakes filing: a documented checklist, a second set of eyes on the numbers, and a calendar that does not depend on memory. When the open fields on the form carry the legal weight, a structured review beats a last-minute scramble every time.
- Standardize a one-form-per-property packet so the legal description, property address, and minimum-bid field are confirmed against the sale notice.
- Add a second-reviewer check on the deposit amount and the offer-window day count before anyone signs.
- Calendar the submission deadline and the offer window so the team knows exactly when the agreement voids.
- Document the default exposure, deposit retained plus personal liability for any excess, in the workpaper so the bidder signs with eyes open.
This is the kind of structured, review-first execution we build for clients. Accountably integrates trained, U.S.-led offshore teams into your workflow with documented SOPs and turnaround SLAs, so detail-heavy work like an Agreement to Bid gets handled without the scramble. See how our tax execution support keeps the numbers and the deadlines straight.
FAQs
Is Form 12673 required for every IRS seized property sale?
No. Form 12673 is used when the sale officer requires an Agreement to Bid, often connected to redemption or guaranteed bids. Many public auctions that accept mail‑ins use Form 14731 or 14731‑A instead. Follow your sale notice.
Can I submit Form 12673 online or by email?
Only if the sale notice explicitly provides an online address for submission. IRS guidance permits a notice to specify a physical or online address, but the IRS auctions site indicates that online bidding is not generally available for IRS seized property. Trust your specific notice.
Is the deadline based on postmark or receipt?
Treat it as receipt at the address specified by the due date. The IRS documents mail‑in bids as they are received and will not consider late items.
Can I withdraw a bid?
With Form 12673, you are promising to bid at least a minimum amount within a set period, and failing to perform can cost you the deposit and more. For mail‑in bids at public auctions, the IRS allows withdrawal if a written request is received before the scheduled start time. Different frameworks, different rights.
What should I know about real estate after an IRS sale?
There is a 180‑day redemption period. If you are the buyer, plan for property protection and potential redemption. If you are a former owner or lienholder, redemption requires paying the purchase price plus interest at a 20 percent annual rate, compounded daily.
Reminder. Bidding rules, deposit amounts, and submission methods are set by each sale notice. Procedures change, and the IRS updates its manuals. Verify the details in the notice you are using, and consult the IRS references cited here for the most current rules.