Seller Financing in M&A: When to Accept Seller Notes (And When to Walk Away)

Seller financing is when the seller lends the buyer part of the purchase price. Instead of receiving 100% cash at close, the seller receives some cash plus a promissory note (the ‘seller note’). The buyer pays the note over time with interest, just like any loan.

Why buyers want seller financing: it reduces the cash and bank financing they need. On a $5M deal with 20% seller financing, the buyer needs $4M of cash + bank financing instead of $5M. SBA 7(a) loans (capped at $5M) often require seller financing to cover the gap between bank debt and purchase price. Buyers with limited capital strongly prefer to finance part of the deal through the seller.

Why sellers reluctantly agree: to close the deal. Without seller financing, some buyers can’t make the deal economics work. The seller has a choice: accept partial seller financing and close the deal, or refuse and walk away. Most sellers accept — and most then realize after close that they didn’t negotiate the terms aggressively enough.

The seller note is junior debt — you get paid AFTER the bank. In good times, the seller note pays interest and principal on schedule. In bad times (the business stumbles, cash flow tightens), the bank debt gets paid first; the seller note gets deferred or written off. This is the seller’s key risk: in distressed scenarios, the seller note can be worth zero.

“Seller financing turns ‘cash at close’ into ‘IOU from the new owner.’ The note can be worth 100 cents on the dollar — or it can be worth nothing. The terms determine which.”

Key Takeaways

• Seller financing is included in 30-50% of lower-middle-market deals. Common in SBA-financed transactions where SBA requires 5-10% seller financing.
• Typical seller note: 10-25% of purchase price. 5-7% interest rate. 5-10 year amortization. Subordinated to bank debt.
• Seven negotiable terms: principal amount, interest rate, amortization, subordination terms, security/collateral, personal guarantee from the buyer, and default remedies.
• Personal guarantees from the buyer are critical for protection. Without one, the seller note is unsecured against an entity that may have no other assets.
• Standstill provisions (the seller can’t accelerate or sue while bank debt is current) can lock the seller into bad outcomes for years.
• Default remedies should include the right to take back the business, foreclosure on collateral, or acceleration of the note in specific scenarios.

What is seller financing in a business sale?

Seller financing is when the seller acts as a lender to the buyer for part of the purchase price. Instead of $5M cash at close, the seller receives $4M cash plus a $1M promissory note. The buyer pays the note over 5-10 years with interest. The seller earns yield on the note (5-7% typical), but bears the risk that the buyer can’t pay.

Seller financing is documented in a Promissory Note. The Promissory Note is signed at close along with the Definitive Purchase Agreement. It specifies: principal amount, interest rate, amortization schedule, payment timing, default events, security/collateral, subordination terms, and remedies. Each term is negotiable.

Seller financing is most common in two scenarios. First: SBA-financed deals. SBA 7(a) loans (the most common small-business acquisition loan) cap at $5M and often require 5-10% seller financing to cover the gap. The SBA explicitly favors seller financing as a way to align seller incentives. Second: bank-financed deals where the bank won’t fully finance the purchase price — seller fills the gap.

Seller financing also serves as a deal-saver in negotiations. If the buyer’s offer is short of the seller’s minimum, seller financing can bridge the gap. Buyer offers $4.5M cash; seller wants $5M; deal saved with $4.5M cash + $500k seller note. The seller takes the risk of the note in exchange for the headline price they wanted.

Typical seller financing structure

Typical seller note size: 10-25% of purchase price. Smaller deals (under $5M) often have higher seller financing percentages (20-30%). Mid-market deals ($5-25M) typically settle at 10-20%. Larger deals (over $25M) rarely include seller financing — the buyer has institutional capital.

Typical interest rate: 5-7%. Slightly above prime, slightly below traditional bank rates. The rate reflects: (a) the subordinated nature of the note (riskier than senior debt), (b) the relationship between buyer and seller (often more favorable than market), (c) tax treatment (interest is deductible to buyer, ordinary income to seller). Sellers should negotiate at the high end (6-7%) given the risk.

Typical amortization: 5-10 years. Some notes are interest-only with a balloon payment at maturity (high seller risk). Some are fully amortizing (lower seller risk). Most are amortizing over 5-7 years. Sellers should push for fully amortizing structures — balloon payments often default because the buyer hasn’t generated enough cash.

Subordination: seller note ranks behind bank debt. If the buyer borrows $3M from a bank to fund the deal, the bank’s loan ranks senior to the seller note. In default, the bank gets paid first. The seller note often has a ‘standstill’ provision — the seller can’t accelerate or sue while bank debt is current. This subordination is the seller’s biggest exposure.

The 7 terms that matter most

Term 1: Principal amount. The size of the note. Larger note = more seller risk + more buyer leverage. Sellers should keep it as small as possible. Each $100k of seller note represents $100k of additional risk for the seller. SBA-required minimum is typically 5-10% of price; buyer-preferred is 20-30%; sellers should target 10-15%.

Term 2: Interest rate. The yield the seller earns. Higher rate compensates for risk. Push for 6-8% in current market. Lower rates favor the buyer. The note’s interest rate should reflect market rates for subordinated debt — typically 200-400 basis points above the bank’s senior rate.

Term 3: Amortization schedule. How the note is repaid. Three options: (1) Fully amortizing (level payments of principal + interest over the term — lowest seller risk). (2) Amortizing with a balloon (level payments for the term, with a balloon at maturity — medium risk). (3) Interest-only with a balloon (only interest paid until maturity, all principal due at end — highest risk).

Term 4: Subordination. How junior is the seller note? ‘Standstill’ provisions can prevent the seller from accelerating, suing, or even threatening default while bank debt is current. Sellers should negotiate for limited standstill: e.g., ‘seller can accelerate 90 days after a payment default if the bank doesn’t cure within 60 days.’ Full standstill effectively gives the bank veto over seller remedies.

Term 5: Security / collateral. What backs the note. Best case: second lien on the business’s assets (after the bank’s first lien). Better case: pledge of buyer’s equity in the new entity. Worst case: unsecured (no collateral). Sellers should always demand at least a second lien plus equity pledge.

Term 6: Personal guarantee from the buyer. Without a personal guarantee, the seller note is the obligation of an entity that may have no other assets. With a personal guarantee, the buyer’s personal assets back the note. Sellers should demand at least a limited personal guarantee from key principals — ideally for the full principal amount.

Term 7: Default remedies. What happens if the buyer defaults? Acceleration (full balance becomes immediately due). Foreclosure on collateral. Right to take back the business (in some structures). Sellers should negotiate aggressive default provisions — the threat of these provisions encourages timely payment.

Subordination: the most dangerous clause for sellers

Subordination is what makes seller notes junior to bank debt. If the buyer borrows $3M senior debt and signs a $1M seller note, the bank ranks ahead of the seller. In default scenarios, the bank’s collateral and recovery come first. The seller note recovers only what’s left.

Standstill provisions can extend years. ‘Standstill’ means the seller can’t take action against the buyer for non-payment as long as the bank debt is current. Some standstill provisions last for the full term of the bank debt (5-7 years). During that time, the buyer can be 6 months late on the seller note and the seller has no remedy.

Why this matters in practice. If the business stumbles, the buyer prioritizes paying the bank to avoid bank default (which would trigger standstill termination). The buyer pays the seller note last, possibly months late, possibly never. The seller is locked out of remedies because of the standstill.

Sellers should negotiate limited standstill. Acceptable: ‘Seller may accelerate the note 90 days after a payment default if the bank does not cure within 60 days.’ ‘Standstill terminates if the bank itself accelerates its debt.’ ‘Standstill applies only to acceleration, not to filing or commencing arbitration.’ Each carve-out preserves seller leverage.

Personal guarantees: the seller’s most important protection

A personal guarantee makes the buyer’s personal assets liable for the note. Without a personal guarantee, the note is owed by an entity (the new HoldCo or OpCo). If the entity becomes insolvent, the seller has nothing to collect against. With a personal guarantee, the buyer’s personal assets (home, savings, retirement) back the note.

Demand a personal guarantee from the deal’s principal(s). If the buyer is a Search Funder, they should personally guarantee. If the buyer is a PE-backed entity, the PE firm (or general partner) should personally guarantee or provide a backstop letter. If the buyer is an Independent Sponsor, the sponsor should personally guarantee.

Limited vs. full personal guarantees. Buyers will resist full personal guarantees and offer ‘limited’ ones. Limited PGs cap personal liability at a specific amount (e.g., $500k of a $1M note). Sellers should push for full personal guarantees for the principal amount; limited PGs are second-best.

Personal guarantee enforcement. Personal guarantees are enforceable in all 50 states. Sellers should be aware that PGs can be challenged based on capacity, fraudulent inducement, or unconscionability — but courts generally enforce PGs unless something very wrong happened. Make sure the PG is signed by the right person, witnessed if required, and properly notarized.

Security and collateral: what backs the note

Standard security: second lien on the business’s assets. The bank takes a first lien (priority on collateral). The seller takes a second lien (recovers what’s left after the bank). Second lien gives the seller the right to foreclose on assets in default — but only after the bank has been paid first.

Better security: pledge of equity in the new entity. If the buyer is a new HoldCo (which owns the business), the seller can require a pledge of HoldCo’s equity. In default, the seller can foreclose on the equity and take ownership of the business. This is more powerful than just second lien on operating assets.

Best security: combination of second lien + equity pledge. Both at once. Second lien protects against asset stripping. Equity pledge protects the seller’s position in case the business is restructured or sold. Sellers should push for both whenever possible.

Sellers without security: Some buyers (especially PE-backed) refuse to grant security to seller notes because their senior lenders prohibit it. In these cases, sellers should require: (a) personal guarantee, (b) anti-disposition covenants (buyer can’t sell the business while the note is outstanding without paying off the seller note first), (c) financial reporting covenants (seller gets quarterly P&L).

When seller financing makes sense (and when it’s a trap)

Seller financing makes sense when: (1) the buyer is well-capitalized and has good track record (PE platform, established Strategic, experienced Search Funder); (2) the seller note is small relative to total deal (under 20%); (3) personal guarantees are in place; (4) security is granted; (5) the seller is genuinely willing to wait for payment (i.e., doesn’t need 100% liquidity at close).

Seller financing is a trap when: (1) the buyer is undercapitalized (Independent Sponsor without committed capital, Search Funder without strong investor backing); (2) the seller note is large (over 25% of price); (3) no personal guarantee; (4) no security; (5) full standstill provisions that prevent seller remedies; (6) the buyer’s business plan is shaky (unrealistic projections, new owner without operating experience).

Industry-specific risks. Some industries are riskier for seller financing. Cyclical industries (construction, automotive) can stumble in downturns. New-owner-dependent industries (skilled trades where the seller’s expertise was the value) can decline post-close. Capital-intensive industries (manufacturing) can struggle to fund the seller note while servicing operating capex needs.

When in doubt: refuse the seller note and accept lower price. If the buyer can only close with seller financing and you’re uncomfortable, the deal probably doesn’t work. A $4.5M all-cash deal is often better than a $5M deal with $1M of risky seller note. Calculate the present value of the note (discount at 8-10%) and compare to the all-cash alternative.

SBA-financed deals: special considerations for seller financing

SBA 7(a) loans are the most common acquisition financing for deals under $5M. The SBA caps loan amounts at $5M. Many buyer-target deals are $3-5M, which forces buyers to use 100% SBA financing. SBA rules often require 5-10% seller financing as part of the deal.

SBA seller note rules: Standby agreement is typically required (seller agrees to standstill on payments while SBA debt is current). 2-year minimum standby period. Seller notes can be capped at full or partial standby depending on SBA rules.

Why SBA rules favor seller financing: the SBA wants seller alignment with buyer success. If the seller is collecting on a note over 5-7 years, the seller has incentive to support post-close operations, customer transitions, and stability. Without seller financing, the seller is gone after close.

Risks of SBA seller financing: the standby agreement can lock seller out of remedies for 2+ years. The standby period sometimes extends with bank consent. Buyers who default on the SBA loan often default on the seller note simultaneously — and the SBA recovers from collateral first. Sellers in SBA deals should negotiate the highest possible interest rate and the strongest possible personal guarantee.

Conclusion

Seller financing turns ‘cash at close’ into ‘IOU from the new owner.’ Done right, the seller note earns yield over 5-7 years and helps close deals that wouldn’t otherwise pencil. Done wrong, the seller note is uncollectible — the buyer defaults, the bank gets paid first, the personal guarantee is unenforceable, and the seller writes off 100% of the note. The seven terms (principal, interest rate, amortization, subordination, security, personal guarantee, default remedies) determine which outcome you get. Negotiate each term aggressively. Demand personal guarantees. Demand security. Demand limited standstill. And when in doubt, refuse the seller note and accept a lower all-cash deal — the certainty is often worth more than the headline price.

Frequently Asked Questions

What is seller financing in a business sale?

Seller financing is when the seller lends the buyer part of the purchase price in the form of a promissory note. Instead of receiving 100% cash at close, the seller receives some cash plus a note paid over 5-10 years with interest. Common in 30-50% of lower-middle-market deals, especially SBA-financed transactions.

How big is a typical seller note?

10-25% of purchase price. Smaller deals (under $5M) often have higher seller financing (20-30%). Mid-market deals ($5-25M) typically 10-20%. Larger deals ($25M+) rarely include seller financing. SBA deals typically require 5-10% as a minimum.

What’s a typical interest rate on a seller note?

5-7%, with 6-7% being most common. Slightly above prime, below traditional bank rates. The rate compensates the seller for risk (subordinated to bank debt, often unsecured beyond second lien). Sellers should negotiate at the high end given the actual risk profile.

What’s the difference between subordinated and senior seller notes?

Subordinated: seller note ranks behind bank debt. In default, bank gets paid first. Most seller notes are subordinated. Senior: seller note ranks at or above other debt. Rare; usually only happens when the buyer doesn’t use bank financing. Subordinated is much more common but also riskier for sellers.

Should I demand a personal guarantee on a seller note?

Yes, almost always. Without a personal guarantee, the note is owed by an entity that may have no other assets. With a personal guarantee, the buyer’s personal assets back the note. Demand at least a limited PG from key principals; push for full PG for the principal amount. PE-backed buyers may resist; press them for at least a backstop letter or limited PG.

What’s a standstill provision and why is it dangerous?

A standstill prevents the seller from taking enforcement action (suing, accelerating, foreclosing) while the bank debt is current. Some standstill provisions last 5-7 years (the full bank loan term). During that time, the buyer can be late on payments and the seller has no remedy. Sellers should negotiate limited standstill: e.g., ‘seller can accelerate 90 days after payment default if bank doesn’t cure within 60 days.’

What collateral should I require on a seller note?

At minimum: second lien on the business’s assets (after the bank’s first lien). Better: pledge of buyer’s equity in the new entity. Best: both. Without collateral, the seller note is unsecured against an entity that may have no other assets. Always demand at least a second lien.

Is seller financing required by SBA loans?

Often, yes. SBA 7(a) loans (most common acquisition financing) typically require 5-10% seller financing for deals where the buyer uses 100% SBA debt. The SBA wants seller alignment with buyer success. Seller financing in SBA deals usually requires a 2-year standby agreement (full standstill on payments while SBA debt is current).

What happens if the buyer defaults on the seller note?

Depends on terms. With personal guarantee + security + limited standstill: seller can pursue the buyer’s personal assets, foreclose on collateral, and accelerate the note. Without these protections: seller has limited remedies, often must wait years for bank debt to clear, and may write off 100% of the note. The protections you negotiate at close determine your recovery in default scenarios.

Should I accept a balloon payment structure?

No, generally. A balloon means most/all of the principal is due at the end of the term. By that point, the buyer needs to refinance or sell the business to pay it off. Many balloon notes default because the buyer can’t generate enough cash. Push for fully amortizing structures (level payments of principal + interest over the term).

Can I sell my seller note to a third party?

Sometimes. Some seller notes are transferable (with consent of the buyer). Specialized note buyers (notes ‘factor’ companies) buy seller notes at a discount — typically 60-80 cents on the dollar depending on creditworthiness. The discount is the price of liquidity. Most seller notes have anti-assignment clauses; check the language.

When should I refuse seller financing entirely?

When the buyer is undercapitalized (Independent Sponsor without committed capital, weak Search Funder), when no personal guarantee is available, when full standstill provisions lock you out of remedies, or when you genuinely need 100% liquidity at close. A $4.5M all-cash deal is often better than a $5M deal with $1M of risky seller financing — calculate the discounted value of the note and compare.

About the Author

Christoph Totter is the founder of CT Acquisitions, a buy-side deal origination firm headquartered in Sheridan, Wyoming. CT Acquisitions sources founder-led businesses for 75+ private equity firms, family offices, and search funds across the U.S. lower middle market ($1M–$25M EBITDA). Christoph writes about M&A from the perspective of someone on the phone with both sides of the deal table every week. Connect on LinkedIn · Get in touch