The letter of intent is signed. The DSO deal is real. And your practice still has payroll due Friday. That 90-to-180-day window between LOI and acquisition close is one of the most cash-stressed periods a dental or veterinary practice owner will ever face — and most traditional lenders won't touch you because a change-of-ownership flag freezes your existing credit lines. According to the ADA Health Policy Institute, DSO-affiliated dentists now represent roughly 36% of the dental workforce, meaning tens of thousands of practices are cycling through this exact limbo every year. What's actually funding that gap? More often than most people admit: merchant cash advances.
Why the DSO acquisition window creates a funding dead zone
Once a DSO issues a letter of intent, your existing bank relationship quietly breaks down. Most practice credit lines contain a material-change clause that lets the bank freeze or reduce availability the moment a sale process is disclosed. You're not closed yet, so you can't use buyer funds. You're not free anymore, so the bank won't extend new credit. You're stuck.
This is not a rare edge case. The average DSO acquisition process runs 120 to 150 days from LOI to funded close, according to healthcare M&A advisors who track dental and veterinary transactions. During that stretch, the practice still carries full overhead — hygienists, front-desk staff, lab fees, equipment leases, supplies. Revenue keeps coming in, but it often dips because the owner is distracted by due diligence, credentialing audits, and legal review. A single associate leaving mid-process can drop a dental practice's monthly collections by $40,000 to $80,000 overnight.
The bank freeze isn't personal. The material-change clause exists to protect the bank's collateral. But it leaves you running a $2M-revenue practice on whatever cash happens to be in your operating account the day the LOI was signed.
Why MCA fits this window — and what makes it different from a bad MCA
A merchant cash advance works here for one specific reason: it is not a loan against your assets or creditworthiness as an ongoing business owner. It is an advance against future receivables. The funder does not care that you are selling. They care that your practice is still producing revenue every day until that close date — and it almost always is.
Healthcare practices are actually strong MCA candidates by funder criteria. Insurance reimbursements and credit card patient payments create predictable daily deposit flow, which is exactly what MCA underwriters look at. A dental office collecting $180,000 a month in mixed insurance and patient payments will typically qualify for an advance of $100,000 to $250,000 in 24 to 72 hours, with factor rates currently running between 1.15 and 1.35 depending on time in business and average daily balances, based on FynFund's deal data across our funder panel of 100+ lenders. That is a cost of $15,000 to $87,500 on a $250,000 advance — expensive, but compare that to losing your best hygienist because you missed a payroll cycle.
The Federal Reserve's 2024 Small Business Credit Survey found that 43% of businesses with employees that applied for financing in the prior 12 months reported at least partial unmet credit needs. For practices in active M&A, that number is almost certainly higher, because conventional products require stability disclosures the seller cannot honestly make. [Fed]
The specific MCA structure that works for bridge situations
- Short term, 3 to 6 months: matches the acquisition timeline. You do not want a 12-month MCA you'll have to negotiate out of at close.
- Daily ACH or weekly split: insurance-heavy practices often prefer weekly remittance to avoid daily cash-flow friction during a slow collections week.
- No prepayment penalty or buyout clause: critical. At close, the DSO wires your proceeds and you pay off the advance that day. If the funder charges a full remaining-balance penalty for early payoff, your net at close shrinks hard.
- Single-position advance: if you already have a position with another funder, stacking a second advance before close is a mistake. More on this below.
The trap: taking on MCA debt the DSO will claw back at closing
Here is the part nobody in the broker world likes to say plainly. Every dollar of MCA balance outstanding at closing gets subtracted from your sale proceeds. The DSO's acquisition attorney will run a lien search, find the UCC-1 the MCA funder filed, and require a payoff letter before wires are released. That is standard and fine — if you planned for it. The trap is when a practice owner took a $300,000 MCA stack from three different funders, paid factor rates of 1.30 to 1.45 on all three, and then discovers their net proceeds drop by $390,000 at the closing table. That is not hypothetical. It has happened to practices in our network.
The math of bridge funding only works when you treat the MCA as a surgical tool, not a lifeline you keep drawing from. The rule FynFund uses internally: total MCA balance at any point should not exceed 10% to 12% of the anticipated acquisition price. On a $3M DSO deal, that means keeping outstanding advances under $300,000 — and ideally under $240,000, because factor cost eats another $30,000 to $60,000 of that before payoff.
| Scenario | Acquisition Price | MCA Balance at Close | Factor Cost (est.) | Net Proceeds Lost |
|---|---|---|---|---|
| Disciplined bridge | $3,000,000 | $200,000 | $36,000 | $236,000 |
| Moderate overuse | $3,000,000 | $400,000 | $90,000 | $490,000 |
| Stacked positions | $3,000,000 | $750,000 | $225,000 | $975,000 |
Veterinary practices: same window, different cash-flow profile
Vet practices face the same dead-zone problem but with one wrinkle: a higher percentage of out-of-pocket client payments and lower insurance volumes mean daily deposit patterns are less predictable than dental. This makes some MCA funders nervous and can push factor rates slightly higher — typically 1.20 to 1.40 for well-established practices versus 1.15 to 1.30 for dental.
Veterinary consolidators — NVA, VCA, Blue River, and others — have been acquiring practices at a pace that mirrors dental DSO activity. The BLS Occupational Employment data shows veterinary services employment has grown more than 20% since 2019, and practice revenues have followed. [BLS] That growth is exactly what draws consolidators, and it means more vet practice owners are now sitting in that same 90-to-180-day limbo. An established multi-doctor vet practice doing $2.5M annually can typically access $150,000 to $350,000 in bridge capital, depending on average daily deposits and outstanding existing debt.
One non-obvious issue specific to vet practices
Some veterinary practice acquisitions use an asset-purchase structure rather than a stock purchase. In an asset purchase, the MCA funder's UCC lien against receivables can create complications if the acquirer is not purchasing accounts receivable. Get your M&A attorney and the MCA funder on the same page before you sign. This is a step most brokers skip entirely. It almost never matters in dental (where stock purchases dominate), but in vet it matters roughly 30% of the time based on deal structures we've seen.
What funders actually look at for a healthcare bridge advance
Funders approve or decline bridge advances based on the same criteria they use for any MCA, plus one additional check: they will see from your bank statements whether your deposits have started declining. A practice with stable or growing deposits sails through. One with 3 months of 20%+ deposit drops looks like it is losing patients ahead of the sale — and funders will either decline or cut the advance amount sharply.
- Last 3 to 6 months of business bank statements (the core underwriting document).
- Last 3 months of processing statements if you take credit cards — most practices do.
- Proof of time in business: 5+ years improves your factor rate meaningfully.
- A brief explanation of the pending acquisition, so underwriters don't mistake the activity change for business distress.
- Outstanding balances on any existing MCAs, lines of credit, or equipment loans — these reduce your approval amount.
When MCA bridge funding is the wrong call
MCA bridge money is wrong for your situation in at least three specific cases. First: if your acquisition timeline is uncertain or the deal has a real chance of falling through. An MCA is not a conditional instrument — you owe the factor cost whether the DSO closes or walks. Second: if your daily collections are already soft and you would struggle to meet ACH remittance without dipping below your minimum operating balance. Factor rates do not care about your bad months. Third: if the gap is purely cosmetic — meaning you have personal savings or a home equity line available at 7% to 9% interest. That is almost always cheaper than an MCA factor rate, and for a 90-day bridge the interest cost difference is not trivial.
A $200,000 MCA at a 1.25 factor costs $50,000. A $200,000 HELOC at 8.5% APR over 120 days costs roughly $5,600. If you have the HELOC available, use it. The MCA is for when you don't.
