How Much Down Payment to Buy a Business? 10% vs 20% Tested on 27,400+ Real Listings

The short answer

This study uses the Main Street Index, BigIdeasDB’s census of 84,900+ businesses-for-sale listings from 29 marketplace sources. We kept the 48,800+ US listings quoted on owner earnings (SDE), after removing cross-site duplicates, and modelled the 27,400+ that state both an asking price and SDE. SDE is profit plus the owner’s own pay, so it is the pot that has to cover both your salary and the loan.

Every figure is an asking price or a stated SDE from a listing, never a closed sale. The loan model is ours and is labelled wherever it appears: project cost = asking price x 1.13 (10% working capital plus 3% fees and closing costs, the same convention as our budget guide), a 10-year term at 10.5% fixed (about 16.2% of the loan a year), an $80K salary for whoever runs the business, and the lender’s 1.25x floor. Swap in your lender’s quote; the structure of the math holds.

“I’ve watched multiple otherwise solid deals die because the bank knocked $60-80k off the normalized cash flow and suddenly the 1.25x threshold disappeared.”r/buyingabusiness

Across 27,400+ priced US listings, the median business asks $395K, and 10% of its project cost is about $45K of cash. The table shows the down payment at 10% and 20% of the project, the illustrative yearly loan payment at 10% down, and the share of listings that clear 1.25x after an $80K salary at each level.

Three patterns stand out. Small businesses fail on salary, not on debt. Under $100K, 94.2% of listings cover their loan before anyone is paid, but only 12.9% still clear 1.25x once an $80K salary comes out. The median business in that band states $50K of SDE: it is a job, and a modest one.

$500K to $2M is where a financed purchase most often works, with 55% of listings passing at 10% down and about 64% at 20%. Above $2M, multiples climb faster than earnings (the median rises from 3.0x to 4.5x of SDE) and coverage slips again. Our budget guide finds a slightly lower sweet spot ($250K to $1M) because it deducts a $50K salary rather than $80K; the shape is the same.

Doubling the down payment buys surprisingly little. In no band does 20% down lift the pass rate by more than 11.4 points. That is the subject of the next section, and the number most down payment guides never show.

Does a bigger down payment fix a deal that fails DSCR?

Rarely: moving from 10% to 20% down rescues only 5.8% of 27,400+ priced US listings (Main Street Index, October 2026). We worked out, for every listing, the minimum equity share that would bring it to 1.25x after an $80K salary. The answer splits the market into three groups.

• 42.6% already pass at 10% down. For these, extra cash only adds a cushion.
• 11.1% need 10% to 30% down. This is the only group a larger down payment really helps: 5.8% pass at 20%, another 5.3% at 30%.
• 46.3% would need more than 30% of the project in equity, or cannot work at all. 10.0% need 30% to 50%, 16.0% need more than half, and in 20.3% stated SDE is below the $80K salary itself.

The decision rule that falls out of this: if a listing fails at 10% down, check how badly. A deal that needs 12% to 20% equity is a negotiation about structure. A deal that needs 50% is overpriced for its earnings, and the right move is a lower offer or a different business. Between $100K and $250K the median listing would need 70.8% equity to pass, which means most of that band is priced as if the buyer works for free.

Lenders reach the same conclusion from the other side. Under the new SBA rules, total debt is capped at the independent valuation, and if the price exceeds the valuation the difference has to be made up in equity (SOP 50 10 8.1 summary). That is the bank telling you the price is wrong, in cash. Our small business valuation guide shows how to check a price before the bank does.

“If the sale price cannot be fully supported by the tax returns, a larger down payment may be required, or, the seller may need to accept a lower price.”r/buyingabusiness

The share of listings that can carry an SBA loan after a salary ranges from 66.6% in building maintenance to 23.4% in cafes across the 20 industries below (Main Street Index, US, 320+ to 2,100+ priced listings each). Cash at 10% and 20% is for the median asking price in each industry, on the same project-cost model.

Service and trade businesses carry debt best. Care homes, building maintenance, HVAC and general contracting all clear 1.25x in roughly 60% to 67% of listings at 10% down, because their stated SDE is high relative to price (care homes: $223K of SDE on a $299K ask). If an SBA purchase is your plan, start with our home service business data and the easiest businesses to run.

Food and beverage struggles even with more cash. Cafes, laundromats, liquor stores and bakeries pass in 23% to 34% of listings, and 20% down adds only 3 to 8 points. Their SDE is close to one salary, so there is little left for the bank. Our coffee shop and laundromat guides show why. The buying a liquor store guide shows how the pass rate rises with store sales. Hair salons are the starkest case: the median listing states exactly $80K of SDE, so it covers a salary and nothing else, and 20% down moves the pass rate from 24.1% to 25.5%. Our buying a hair salon guide shows the pass rate jumps to 92.4% when the owner works the chair.

Watch for look-alike listings. Courier and delivery routes look like the best SBA candidates (75.1% pass), but 307 of the 547 priced listings share near-identical descriptions. Those clustered listings pass 90.2%; the other 240 pass 55.8%. We kept courier out of the table for that reason. The FedEx route guide breaks that split down by listing format. Our HVAC guide found the same templating pattern.

Why these pass rates read lower than our industry guides. The industry guides finance 90% of the asking price alone. This page finances 90% of the whole project, which adds 13% for working capital and fees, because that is the cash a buyer actually has to raise. The extra debt costs coverage: auto repair passes 57.8% in our auto repair guide and 43.8% here, HVAC 75.2% there and 66.3% here. The same applies to our how to buy a business and valuation guides, which run the same $80K-salary test on the asking price alone and find about 48.5% to 48.8% of all priced listings passing, against 42.6% here. Same listings, different question.

The SBA loan rules that set your down payment in 2026

Since October 1, 2026, SBA 7(a) acquisitions follow SOP 50 10 8.1, which keeps the 10% minimum equity injection but tightens what counts toward it and how coverage is tested (SBA SOP 50 10; summary by Pioneer Capital Advisory). The rules that change your cash number:

• Loan size and term. The 7(a) maximum is $5M (sba.gov). Terms run up to 10 years for a business purchase without real estate, and up to 25 years for real estate (SBA terms and conditions).
• Interest rate caps. Rates are negotiated but capped against the prime rate; for loans over $350K the cap is prime plus 3.0% (sba.gov). Check today’s prime in the Federal Reserve’s H.15 release. Our 10.5% is a round illustration, not a quote.
• Equity injection: 10% of total project costs for a first-time buyer (an Initial Acquisition). Project costs include working capital, fees and closing costs, not just the price.
• One capped bucket for non-cash equity. Seller notes on full standby, other standby debt and small outside investors now share a single allowance capped at half the injection. The other half is your own unborrowed cash.
• Full standby means the life of the loan. A seller note counts as equity only if it receives no principal or interest until the SBA loan is repaid, typically 10 years.
• 1.25x on history. Coverage for a first-time buyer is 1.25x, measured on the last fiscal year or a two-year average, historical or lender-adjusted. Projections cannot carry the deal. Interest-only seller debt is underwritten as if it amortizes over 10 years.
• Quality of Earnings at $3M. Purchases of $3M or more (excluding owner-occupied real estate) need an independent QoE report on top of the valuation (AAFCPAs, September 2026). In our data that is 1,700+ listings, 6.4% of those priced.

One rumour to ignore: the claim that the SBA “doubled” the limit to $10M. Lenders in the thread that spread it pointed out that $10M only comes from stacking a $5M 7(a) with a separate 504 loan for real estate. For a pure business purchase, $5M is still the ceiling. In our data, 860+ priced listings (3.2%) ask so much that 90% financing would exceed it.

“You aren’t getting $10M for a 7a unless it includes real estate in which case you’d also have to use 504.”r/buyingabusiness

“On a $1M deal, $50k is the ceiling for all of it combined. The other $50k is unborrowed cash from the buyer.”r/buyingabusiness

Only 5.3% of 45,300+ US listings with a buyer profile mention the SBA at all, and the 870+ that say “SBA prequalified” are bigger and pricier than the rest (Main Street Index, October 2026). They pass our 1.25x test more often, but 45% of them still fail it after an $80K salary.

Prequalified listings ask a median 3.01x SDE against 2.59x for listings that say nothing, and they cluster at the top of the market: 0.6% of priced listings under $250K carry the label, against 5.0% to 5.7% from $500K up. A lender has looked at the seller’s numbers, which beats nothing. It has not looked at you, your structure or your salary.

“There are plenty of lenders that will pre-qualify based on a broker’s CIM or Recast alone...not tax returns; and the deal might change completely when talking tax return numbers.”r/buyingabusiness

“The big variables are the buyer’s liquidity and living standards. How much will they have to pay themselves to support their existing living expenses?”r/buyingabusiness

Treat the badge as a lead, not an approval. Rerun the coverage test with your own salary, and ask which documents the lender saw. Our due diligence guide lists what to request.

At an illustrative 10.5% fixed over 10 years, a $1M business loan costs about $13.5K a month, $2M about $27.0K and $3M about $40.5K. The right-hand column is the share of 27,400+ priced US listings whose stated SDE could carry that loan at 1.25x after an $80K salary (Main Street Index, October 2026).

How hard is a $1M business loan? It needs a business with about $282K of SDE, which 27.6% of priced listings state. The bank also wants roughly $110K or more of your cash (10% of a $1.1M project) and experience running something similar. A $2M or $3M loan narrows the field to 12.3% and 7.1% of listings, and a $3M purchase now adds a Quality of Earnings report, which lengthens diligence.

“For a $2M loan I would want to see that guarantors had around 300K liquid, a couple years experience managing similar caliber employees to the business they’re buying, and a clean credit history.”r/buyingabusiness

A rate move matters less than people expect. On a $1M loan, going from 9.5% to 11.5% changes the monthly payment by about $1.1K. Changing the price by 10% changes it by $1.35K. Run your own numbers in the free ROI calculator and read how to calculate ROI.

How much can I borrow to buy a business?

You can borrow up to $5M under SBA 7(a), but the business sets the real limit: (stated SDE minus a market salary) divided by 1.25 is the most yearly debt service it can carry, and dividing that by 0.162 (10.5% over 10 years) gives a rough loan ceiling. A business with $200K of SDE supports about $593K of debt; one with $150K supports about $346K.

Compare that ceiling with the price. If the supportable loan plus 10% equity is below the asking price, the gap is the overpricing in dollars, and it has to be closed with more equity, a seller note on full standby, or a lower price. Our business worth guide and the industry benchmarks show the multiple each trade typically asks.

Lenders will not let you borrow your down payment against the business. The equity has to come from you, and any personal loan used for it must be repaid from income outside the business, such as a spouse’s wage or rent.

“Your own salary or draws from the business you’re buying won’t qualify. That’s not a lender preference, that’s the rule.”r/buyingabusiness

How seller notes change the down payment math

23.2% of priced US listings say seller financing is available (20.4% of all US listings, including those with no price or SDE), and the 840+ that state a size put the median note at 30% of the price (middle half 15% to 50%) (Main Street Index, October 2026). How that note is structured decides whether it helps your cash, your coverage, or neither. Our seller financing guide covers which sellers offer it.

A paying seller note barely helps coverage. Replacing 10 points of bank debt with a 7% seller note over 10 years lifts the pass rate from 42.6% to 43.4%. Squeeze the note into 5 years, as many sellers want, and the pass rate falls to 39.8%, because the faster payoff costs more each year than the bank debt it replaced.

A note on full standby works like cash for coverage. Payments that do not start until the SBA loan is repaid are left out of debt service. So 10% cash plus 10% standby note plus 80% SBA debt tests like 20% down (48.4% pass) while you bring half the cash. The catch is the seller: they wait up to 10 years to be paid, which is why brokers say sellers resist it.

A standby note can also halve your cash at the floor. The 90/5/5 structure (90% SBA, 5% your cash, 5% standby note) is legal under the capped bucket, but lenders reserve it for strong buyers and strong coverage.

“Business broker here, assisting buyers. 5% down is not the norm but it’s very common. Around 1/4 of my SBA deals are structured this way.”r/buyingabusiness

“Lenders prefer 90-5-5 when the cash flow is bulletproof (DSCR > 1.4x) and the buyer has strong operational background in that specific industry.”r/buyingabusiness

For deals financed by the seller alone, outside the SBA, one broker’s rule of thumb is to keep seller-note payments under about 40% of what the business earns. Retiring owners are the likeliest to carry paper; see buying from a retiring owner and why owners sell.

Cash you need beyond the down payment

The down payment is only the first cheque. In the Main Street Index, 3,800+ priced listings say inventory is sold on top of the asking price, against 7,400+ that include it, and the median stated inventory is $20K, 4.6% of the price (October 2026). Budget for these before you call a deal affordable:

• Working capital. Our model adds 10% of the price. Buyers who have done it say 3 to 6 months of operating costs, and some lenders will finance part of it inside the loan. Under SOP 50 10 8.1, permanent working capital cannot be fully financed in an expansion deal with zero equity.
• Inventory not in the price. Check the listing; when it is excluded, it is paid at closing at count.
• Closing and financing costs. The SBA upfront guaranty fee, which lenders may pass on to you (sba.gov), plus the independent valuation, legal fees, and a QoE report at $3M or more. Under the new SOP, diligence costs you pay out of pocket can count toward equity in some deal types; confirm with your lender.
• Rent deposits and lease costs. Across 7,700+ listings that state rent, the median rent is 36% of stated SDE, so a new lease or deposit can be a large line.
• Personal liquidity after closing. Lenders look at what you keep, not just what you inject.

“You’re lucky if you get a working capital as part of your SBA loan, but you are going to need more than that.”r/buyingabusiness

“I bought a lemon. Didn’t fully figure it out until after we ran out of working capital.”r/buyingabusiness

The free startup cost calculator and break-even calculator handle the line items; the break-even guide explains the math. For which industries sell stock on top of the price and what it does to the 1.25x test, see the hidden costs of buying a business.

Where the down payment can come from

Under SBA rules at least half of the 10% injection must be your own unborrowed cash; the rest can come from the capped bucket of standby seller notes, standby debt and small passive investors. Buyers and lenders in r/buyingabusiness list these sources for the cash part:

• Savings and brokerage accounts. The cleanest source. Lenders will want statements showing where the money came from.
• Retirement funds through a ROBS structure. Allowed, with tax and plan rules that need a specialist.
• Gifts from family. Usually with a gift letter stating no repayment.
• Home equity. A cash-out refinance is common; a HELOC is more often used for liquidity after closing. Confirm with your lender before you draw.
• A partner or investor. Counts, but under the new rules investor money in the injection is limited and frozen until the loan is repaid.

“Funds for SBA equity injection can be cash, gift from family, retirement funds (look into ROBS or ROBS+), potentially home equity or HELOC, or bringing in a partner but you will need to give up equity.”r/buyingabusiness

“Recently closed on a business that wasn’t for sale. I approached the owner. I used a HELOC for the majority of my 10% down.”r/buyingabusiness

Can you buy a business with no money down?

Not through SBA 7(a) as a first-time buyer: half the 10% injection must be your own cash, and the October 2026 rules closed the stacking that let some buyers fund all of it with notes and investors. In our data, 77% of priced listings do not say seller financing is available, so the full-seller-finance route is narrow too.

Where it does happen, it is small. One recent buyer in r/buyingabusiness was putting $15K down on a $75K service business with the seller carrying $60K, and the replies focused on the same risks this study measures: whether the business earns enough to pay the seller and its new owner. Our buyer mistakes study covers the rest.

“If you aren’t ready to put 10 percent of the purchase price in the form of liquidity from your own savings, you are not ready to take on a business note guaranteed by the US taxpayer.”r/buyingabusiness

Do conventional loans need 20% down? Usually 20% to 30%, with shorter terms than SBA. If you can put 20% or more down and the business clears coverage easily, a conventional loan avoids the SBA guaranty fee; otherwise SBA 7(a) is the lower-cash path.

Worked examples at four price points

Each example pairs the median asking price with the median stated SDE of its band, so it describes no single listing. Same illustrative model: project = ask x 1.13, 10.5% over 10 years, $80K salary, 1.25x floor.

$175K asking, $91K SDE

Cash at 10%: $19.8K. Loan payment: $28.8K a year ($2.4K a month). After the $80K salary only $11K is left, so coverage is 0.38x. More cash cannot fix this: even debt-free, the business pays one modest salary. It suits a buyer who wants a job and can live on its SDE.

$350K asking, $150K SDE

Cash at 10%: $39.6K. Payment: $57.6K a year. Coverage after salary: 1.21x, a narrow fail. At 20% down ($79.1K cash) the payment falls to $51.2K and coverage reaches 1.37x. A 10% standby seller note instead of the extra cash gets the same 1.37x with $39.6K of your money. This is the band where structure matters most.

$699K asking, $235K SDE

Cash at 10%: $79.0K. Payment: $115.1K a year ($9.6K a month). Coverage: 1.35x, a pass with about $40K a year left after salary and debt. 20% down ($158.0K) lifts it to 1.51x.

$2.84M asking, $623K SDE

Cash at 10%: $321.2K. Payment: $468.1K a year ($39.0K a month). Coverage: 1.16x, a fail. At 20% down ($642.4K) it passes at 1.31x. Price it a little higher and the deal crosses $3M and needs a Quality of Earnings report.

To compare a real listing against its industry, use the Main Street buyer view, which flags whether its multiple is under, at or over the industry range, then browse live listings filtered by price and financing terms. The buyer walkthrough shows each step.

Thinking of starting a business instead?

Starting avoids paying a multiple for goodwill, but a lender has no earnings history to test, so the 1.25x coverage math above cannot be run on a start-up the same way. The listings give you a benchmark first: a small business under $250K asks a median $175K for $91K of SDE, so building to that level is what you would be skipping. Before you start one, see what it sells for. Our guides to what business to start, the most profitable small businesses, local business ideas and business success rates compare both paths with the same data.

Down payment checklist before you make an offer

1. Price the whole project, not the asking price. Add working capital, closing costs, the SBA guaranty fee, valuation and any inventory the price excludes. Our model uses asking price x 1.13.
2. Take 10% of that project as the cash floor. SBA 7(a) needs at least 10% equity on a change of ownership. Up to half can be a seller note on full standby for the life of the loan, but the rest must be your own unborrowed cash.
3. Subtract a market salary from stated SDE. Lenders take a reasonable owner salary off SDE before testing coverage. We use $80K.
4. Divide what is left by annual debt service. At an illustrative 10.5% over 10 years, a loan costs about 16.2% of its balance a year. You need 1.25x or more on historical numbers.
5. If it fails, find out why. If SDE barely covers the salary, no down payment fixes it: negotiate price. If it fails narrowly, more equity or a full-standby seller note can close the gap.
6. Keep cash after closing. Hold working capital and personal liquidity on top of the injection. Lenders look at what you have left, not only what you put in.

If you research with Claude or ChatGPT, the Main Street Index MCP tools pull the same industry medians into your chat, and our guide to using AI to analyze a business for sale shows prompts that run this checklist. The full process sits in how to buy a business.

What this data cannot tell you

• Asking, not closing. Prices are what sellers ask. Deals usually close lower, which would raise pass rates.
• Stated SDE, not underwritten SDE. Lenders test tax returns and may cut add-backs. A smaller SDE would lower pass rates.
• One illustrative loan. Real rates, terms, fees and salaries differ. A 25-year term on real estate, or a lower salary, changes results a lot.
• Equity is modelled, not observed. We do not see the down payments buyers actually made.
• SBA and seller-note fields are sparse. Only 5.3% of listings mention the SBA and 840+ state a note size. Silence is not a no.
• Look-alike listings. 580+ priced listings repeat the same industry, SDE and revenue across states; we disclose where they move results.
• Rules summary, not advice. SOP 50 10 8.1 is new. Confirm every rule with an SBA lender.

Methodology

Population. Main Street Index listings captured in late September 2026: 84,900+ listings from 29 sources, 78,500+ after removing cross-site duplicates. We kept US listings quoted in US dollars on an SDE basis (48,800+) and modelled the 27,400+ with both an asking price and stated SDE above zero.

Loan model. Project cost = asking price x 1.13. Equity = 10%, 20% or 30% of project. Bank debt amortizes monthly over 120 payments at 10.5% fixed. Seller notes at 7% over 10 or 5 years. Coverage = (stated SDE minus $80K) divided by yearly debt service; pass = 1.25x or more. Equity needed = 1 minus the largest loan the listing supports at 1.25x, divided by project cost. Medians are reported, never averages, and any cut under 30 listings is withheld.

Screens. We flag listings whose industry, SDE and revenue repeat three or more times across two or more states (580+ rows), and courier listings with near-identical descriptions (307). SBA position, seller-note percentage and inventory terms come from the buyer layer (version 1.2.0), extracted from listing text and fields.

Frequently asked questions

More on the data: the Main Street Index docs, source coverage and the custom data request page.