Billings, Montana
Real Estate · Estates · Farm & Ranch Equipment · Business Liquidation
National Auction USA is a family-owned auction company headquartered in Billings, Montana — with over 60 years of family auction experience and more than 40 years serving the state. We specialize in real estate auctions, estate settlements, farm and ranch equipment, and business liquidations. We hold a 4.8-star Google rating across 146+ reviews — the highest of any auction company in Billings.
*Based on Google review ratings across auction companies in Billings, MT as of April 2026.
Who We Serve
National Auction USA works with everyone from families settling a loved one's estate to attorneys managing complex trust liquidations. Whether you're a property owner looking for a better way to sell, an executor handling your first estate, or a professional who needs a documented, defensible process — we meet you where you are and handle the details.
Selling a home, farm, ranch, or land. Downsizing, relocating, or ready to move property through competitive bidding. Auction provides a defined timeline, documented process, and access to qualified buyers statewide.
See how real estate auction worksProbate, trust, conservatorship, SNT, and fiduciary matters require documentation and defensible process. National Auction USA works alongside Montana attorneys and trustees to meet notice, inventory, and court approval requirements under MCA Title 72.
Estate & probate auctions Trust property auctionsAccess to real Montana property, equipment, firearms, and consignments. Every auction is publicly listed with full terms, photos, and inspection details. Register once through our bidding platform and bid on any auction nationwide.
Register to bidEvery Auction Type
Real estate, estate settlements, farm and ranch equipment, business liquidations, firearms, and consignments — all under one roof. One coordinated team, one documented process, one point of contact from consultation through final settlement.
Farm, ranch, residential, commercial, and recreational property statewide.
Learn moreTurnkey personal property through real estate in one coordinated process.
Learn moreTractors, implements, trucks, trailers, and operating equipment.
Learn moreInventory, fixtures, equipment, and complete business dissolutions.
Learn moreMontana Sporting Auction, held three times yearly.
Learn moreSpring, Fall, and New Year's Day sales.
Learn moreHow It Works
Every National Auction USA engagement follows the same documented process. You always know what step you're on and what's coming next.
Free, no-obligation conversation about your property, timeline, and goals.
We evaluate, document, and recommend the right auction format (online, live with simulcast, sealed bid, or multi-parcel).
Professional photography, targeted digital marketing, and outreach to qualified buyer databases — Montana and nationwide.
Properties and assets are presented to pre-qualified, motivated buyers. Our auctioneers manage the event with full documentation at every step.
We coordinate with your title company and attorney. Proceeds distribute per the terms of the auction contract, estate, or trust.
Why National Auction USA
Transparency at every step. Our process is documented from consultation through closing. You always know what's happening next and what it costs.
One team handles personal property through real estate closing in a single coordinated process. You have one point of contact — not a committee.
Trusted by Montana attorneys, trustees, banks, and families. Our process produces defensible documentation that holds up to probate, conservatorship, and trust administration.
Technology powers our reach — our bidding platform reaches over a million registered buyers nationwide. Relationships drive our business. We're here before, during, and after the auction.
Seller Testimonials
“Professional, transparent, and thorough from start to finish. Highly recommended.” — Estate Seller, Billings, MT
“Cash and the team handled our family estate with care and got us results we didn't expect.” — Ranch Owner, Yellowstone County, MT
“Best auction experience we've had. Documented process, clear communication, fair outcome.” — Business Owner, Billings, MT
“Handled a probate sale for one of my clients — documented, court-ready, and closed on time. My clients were pleased.” — Probate Attorney, Billings, MT
“We inherited equipment and land when my father passed. The team walked us through every step. No surprises.” — Executor, Park County, MT
The Most Credentialed Team in Billings
Montana does not license auctioneers, so professional designations are the real measure of expertise. National Auction USA holds the highest professional credentials in the auction industry, with specialized certifications across real estate, appraisal, firearms, and notarization — all in-house.
Cash Seal
President & Lead Auctioneer
27+ years in the auction industry, active since age 15. Second-generation auctioneer — Vern Seal founded National Auction USA in 1965.
Tanya Seal
Operations
In-house appraisal and notary services are included for estate and fiduciary clients at no additional cost.
Frequently Asked Questions
National Auction USA is Billings' highest-rated auction company, with 4.8 stars across 146+ Google reviews — the highest review count of any Billings auction company. Family-owned since 1965, serving Montana for 40+ years, and led by Cash Seal, who holds the CAI, AMM, and FFL credentials. Real estate, estates, equipment, and business liquidations handled statewide.
National Auction USA was founded in 1965 and has served Montana clients for more than 40 years from our headquarters at 3625 South 56th Street West in Billings. The company is family-owned, now in its second generation under President and lead auctioneer Cash Seal, who has been active in auctions since age 15.
Cash Seal is President and lead auctioneer of National Auction USA. He holds the CAI (Certified Auctioneers Institute), AMM (Auction Marketing Management), and FFL (Federal Firearms License) designations, serves on the Montana Auctioneers Association Board, and is a graduate of the Western College of Auctioneering. Cash has 27+ years of auction experience, active in the trade since age 15.
Tanya Seal handles appraisals and estate documentation at National Auction USA. She is a USPAP-certified appraiser — working under the Uniform Standards of Professional Appraisal Practice — and a licensed Montana Notary Public. In-house appraisal and notary services are included for estate and fiduciary clients at no additional cost.
Our bidding platform reaches over one million registered buyers nationwide. Every National Auction USA auction is promoted across this network, giving Montana sellers exposure to qualified bidders statewide, regionally, and nationwide — in addition to targeted marketing within the property's local market.
Montana does not license auctioneers, so professional designations are the real measure. The highest is the CAI — awarded by the National Auctioneers Association through a three-year program at Indiana University. Fewer than 2% of auctioneers worldwide hold it. Other meaningful credentials: AMM, AARE, USPAP, and FFL. National Auction USA holds all five across the team.
National Auction USA has served Montana for 40+ years with a 4.8-star Google rating across 146+ reviews — the most-reviewed auction company in Billings. We operate a documented, transparent process with signed auction contracts, USPAP-certified appraisals, and a licensed Montana notary in-house. Every auction is publicly listed on our bidding platform with full terms and verifiable results.
One team handles personal property through real estate closing in a single coordinated process. CAI, AMM, FFL, USPAP, and licensed notary credentials in-house. Over one million registered buyers nationwide through our bidding platform. 4.8 stars across 146+ reviews. Family-owned since 1965, serving Montana 40+ years. Zero surprises, turnkey solutions, and transparent process on every auction.
Next Step
Every property and every estate is different. Pick the path that fits your situation and we'll walk you through the details, the timeline, and how we'd approach it.
Farm, ranch, residential, commercial, or land.
Go to Real Estate Auctions →Probate, inheritance, or family estate.
Go to Estate Auctions →Attorney, trustee, conservatorship, or SNT.
Go to Trust Auctions →Tractors, implements, trucks, trailers.
Go to Equipment Auctions →Inventory, fixtures, equipment, dissolutions.
Go to Business Liquidations →Collections and consignments through Montana Sporting Auction.
Go to Montana Sporting Auction →
