Fewer dentists own practices than a generation ago. The ADA Health Policy Institute reports that as of 2023, 72.5% of U.S. dentists were private practice owners, down from 84.7% in 2005, and that newer generations tend to become owners later in their careers. HPI also reports that as of 2024, about 16% of dentists were affiliated with a dental support organization. (See the ADA's dental practice research page for the underlying reports.)
For the dentists who do want to own, the first strategic choice is whether to build a practice from scratch or buy one that already exists. Both work. Both fail when chosen for the wrong reasons. This post compares them on the dimensions that matter and gives you a set of decision rules for choosing.
Key takeaways
- An acquisition buys existing cash flow, patients, and staff. A startup buys control over location, design, culture, and clinical direction, at the cost of years of ramp-up.
- Acquisitions usually produce much more owner income in years one to three. Startups usually carry less debt and let you build exactly what you want.
- Lenders view the two differently: an acquisition has history to lend against, a startup has a projection.
- Startups favor dentists with a strong market thesis, patience, cash reserves, and business appetite. Acquisitions favor dentists who want income quickly and can manage a transition.
- Hybrid paths (buy-ins, buying a small practice to relocate, acquiring a retiring dentist's patient records) often beat both pure options.
The core difference: buying cash flow vs. building it
When you acquire a practice, most of the price is goodwill: the expectation that existing patients will keep coming, existing staff will keep working, and existing collections will continue. You pay for that expectation up front, and you inherit whatever comes with it, good and bad.
When you start a practice, you pay for space, buildout, equipment, and working capital, but no goodwill. You get a clean slate and no patients. Your first years are spent building the patient base that an acquisition buyer would have paid for.
Neither is cheaper in any simple sense. One pays for patients with a purchase price. The other pays for them with time, marketing, and several years of lower income.
Side-by-side comparison
| Factor | Startup | Acquisition |
|---|---|---|
| Patients on day one | None | An existing active base (verify the count) |
| Time to meaningful owner income | Often measured in years | Often immediate, subject to transition attrition |
| Total debt | Usually lower, but depends on buildout and equipment | Usually higher, driven by purchase price |
| Location choice | Full control | Limited to where practices are for sale |
| Facility and equipment | New and designed to your workflow | Inherited; may need upgrades soon |
| Staff and culture | You hire and build it | Inherited; can be a strength or a problem |
| Payer mix | You choose from day one | Inherited; changing it risks attrition |
| Lender view | Lending against a projection | Lending against historical cash flow |
| Main risk | Slow ramp, running out of working capital | Overpaying, patient and staff attrition, hidden problems |
| Skills demanded early | Marketing, construction management, hiring | Leadership through change, diligence, transition management |
What each path actually costs
Startup costs
A startup budget covers leasehold improvements (buildout), equipment and technology, furniture and signage, initial supplies, professional fees, pre-opening marketing, and working capital to cover payroll, rent, loan payments, and your own living expenses until collections catch up. Buildout and equipment are the largest lines, and both scale with operatory count and how much you build out on day one versus plumbing for later.
Our operatory cost estimator and what it costs to equip an operatory help with the equipment side. The buildout chapter and equipment planning chapter of our real estate track cover construction and technology planning. Buying some equipment used can lower the startup budget meaningfully; new vs. used equipment for new grads covers the tradeoffs.
Acquisition costs
An acquisition budget covers the purchase price, closing costs (legal, accounting, valuation, lender fees), any immediate equipment or software upgrades, and working capital to carry the practice through transition and insurance credentialing. Our post on how dental practices are valued explains how purchase price is set and how to tell whether a given price is supported by cash flow.
Working capital is where both paths break. Startup owners underestimate how long the ramp takes. Acquisition buyers underestimate the revenue dip from credentialing delays and transition attrition. Whatever path you choose, build a budget that survives your pessimistic scenario, not your expected one. Our realistic startup timeline shows why the ramp usually runs longer than planned.
Three-year cash flow: a hypothetical comparison
Hypothetical example. Two dentists with similar clinical skills choose different paths in the same market. All figures are invented for illustration, and real results vary enormously with market, execution, and luck. Interest rates, loan terms, and ramp speeds are assumptions, not predictions.
Dentist A (startup): borrows $650,000 for buildout, equipment, and working capital. Assume interest-only payments in year one at a hypothetical 8%, then a 10-year amortizing payment. Collections ramp from $350,000 to $800,000 by year three. Fixed costs grow as staff are added; variable costs run about 16% of collections.
Dentist B (acquisition): buys a practice collecting $1,200,000 for $840,000 and borrows $940,000 including working capital, over 10 years at a hypothetical 8%. Collections dip 10% in year one during transition, then recover.
| Startup Y1 | Startup Y2 | Startup Y3 | Acquisition Y1 | Acquisition Y2 | Acquisition Y3 | |
|---|---|---|---|---|---|---|
| Collections | $350,000 | $600,000 | $800,000 | $1,080,000 | $1,150,000 | $1,200,000 |
| Variable costs (16%) | ($56,000) | ($96,000) | ($128,000) | ($172,800) | ($184,000) | ($192,000) |
| Fixed costs | ($330,000) | ($380,000) | ($420,000) | ($528,000) | ($540,000) | ($552,000) |
| Cash before debt and owner pay | ($36,000) | $124,000 | $252,000 | $379,200 | $426,000 | $456,000 |
| Debt service (approx.) | ($52,000) | ($94,600) | ($94,600) | ($136,900) | ($136,900) | ($136,900) |
| Left for owner pay and taxes | ($88,000) | $29,400 | $157,400 | $242,300 | $289,100 | $319,100 |
Over three years, the acquisition leaves roughly $850,000 for owner pay and taxes in this example, while the startup leaves under $100,000, and requires the startup owner to fund a negative first year from working capital. That gap is typical in direction, if not in size.
But notice what the table does not show. The startup owner has $290,000 less debt, a new facility built to their workflow, a payer mix they chose, and a team they hired. If the startup keeps growing, its income can approach or pass the acquisition's in later years, with a lower debt load. The acquisition owner, meanwhile, has taken on the risk that the year-one dip is worse than 10%, and may face an equipment replacement cycle the startup owner will not see for years.
Run your own version. Use the practice loan calculator to replace the hypothetical debt figures with real quotes, and build a pessimistic column for each path: a startup ramp that takes a year longer, and an acquisition that loses 20% of collections in transition. The path that survives its pessimistic case is the safer one for you.
How lenders see each path
Dental-specific lenders finance both, but they underwrite them differently. For an acquisition, the lender examines the practice's historical collections and cash flow, your production history, and whether the practice's cash flow comfortably covers the debt. For a startup, the lender is lending against your business plan, market analysis, and personal track record, so documentation of your production as an associate and a credible demographic case for the location carry more weight. Our post on financing a practice startup covers the startup side in detail, and the acquisition guide covers acquisition financing.
Loan terms, rates, down payment requirements, and SBA program rules change. Get current quotes from several dental lenders and have your CPA review the projections before you commit.
When a startup is the better choice
- You have a strong market thesis. You have identified a growing area with few practices per capita, or a patient segment that is underserved, and you can show why. Our site selection chapter covers how to test that honestly.
- No good acquisition exists where you want to live. Buying a mediocre practice in the wrong place to avoid a startup ramp is a common regret.
- You want a specific model (fee-for-service from day one, a particular technology workflow, a niche like sedation or implants) that would require rebuilding an existing practice anyway.
- You have reserves and patience. A spouse with steady income, low personal debt, or savings that can absorb a slow ramp makes a startup far safer.
- You enjoy building. Construction, hiring from scratch, and marketing are not side tasks in a startup. They are the job for the first two years.
When an acquisition is the better choice
- You need income quickly. Heavy student debt, a growing family, or low reserves favor existing cash flow.
- A good practice is available in your target area with stable collections, a strong hygiene program, and staff likely to stay.
- You are comfortable leading change rather than building from nothing. Taking over a team with established habits is its own skill; our managing a dental team chapter covers what that looks like.
- The seller will support the transition, through introductions, a working transition period, and possibly seller financing, which signals confidence in the practice.
- You prefer clinical work to construction. An acquisition lets you practice full time from the first week.
Hybrid paths worth considering
| Path | How it works | Watch out for |
|---|---|---|
| Associate to buy-in | Work as an associate with a documented path to buy part or all of the practice | Informal promises; get valuation method and timeline in writing |
| Buy small, then relocate or expand | Acquire a small or undervalued practice and move it to better space or add operatories | Patient attrition from the move; lease assignment and non-compete terms |
| Startup plus patient records | Open a startup and buy the patient records of a retiring dentist nearby | How many patients actually transfer; records transfer and notice requirements |
| Merge-in | Buy a retiring dentist's practice and merge it into your existing one | Capacity to absorb patients; staff integration |
The associate-to-owner path deserves particular care. Buy-in promises that are not documented frequently fail to happen. Our associate contract red flags post covers what to insist on in writing.
The risks nobody puts in the brochure
| Startup risks | Acquisition risks |
|---|---|
| Construction delays that push opening back while rent and loan payments start | Active patient counts that turn out to be inflated |
| Slow new patient flow in a crowded market | Key staff leaving in the first months |
| Credentialing that is not done by opening day | Credentialing gaps under new ownership delaying insurance revenue |
| Owner burnout from doing every non-clinical job | Equipment near end of life and deferred maintenance |
| A lease with a personal guarantee you cannot escape if the practice struggles | A lease that is not assignable or has little term remaining |
| Overbuilding operatories for a patient base that takes years to arrive | Seller's clinical work that needs redoing, and who pays for it |
Lease terms matter heavily on both paths. Our lease terms chapter covers personal guarantees, assignment clauses, and tenant improvement allowances.
Questions to answer before you choose
- How many months of personal and practice expenses can I cover if income is zero?
- Is there a practice for sale where I actually want to live and work?
- Do I have a data-backed case for a startup location, or just a preference?
- How much do I enjoy (or tolerate) construction, hiring, and marketing?
- What payer mix do I want, and how hard would it be to change an existing one?
- What does my pessimistic three-year cash flow look like on each path?
- Have I talked with a dental-specific CPA, attorney, and at least two dental lenders?
- Is a hybrid path (buy-in, small acquisition, records purchase) available?
Making the call
If you need income soon, a solid practice is available where you want to be, and you can lead a team through change, buy. If you have a strong location thesis, reserves to survive a slow ramp, and appetite for building, start. If neither fits cleanly, look hard at the hybrid options before forcing either one. Whichever path you take, the financing, lease, and entity decisions carry legal and tax consequences, so confirm your plan with a dental-specific CPA and attorney before signing anything.
Next steps: read the real timeline for starting a practice if you lean toward a startup, and the acquisition guide and practice valuation deep dive if you lean toward buying. Either way, overhead benchmarks will help you pressure-test the projections.
Educational content only. It is not legal, financial, tax, or clinical advice. Prices and ranges are approximate and vary by region, condition, and year. Verify current rules with your state dental board and qualified professionals. ChairsideSource is not affiliated with any manufacturer, the ADA, or the DAT.