Buy vs Start: The Decision That Defines Your Career
Dr. Michael Torres and Dr. Jennifer Chen graduated dental school together in 2019. Both wanted practice ownership by age 30. Dr. Torres bought an existing $950,000 practice for $1.2 million. Dr. Chen started from scratch in a promising suburban location. Five years later, Dr. Torres owns a practice valued at $1.8 million, nets $285,000 annually, and works 4 days a week. Dr. Chen's practice is worth $680,000, nets $145,000 annually, and she works 5.5 days a week including Saturdays. The difference? Dr. Torres had immediate cash flow from 2,100 patients. Dr. Chen spent 18 months building to 800 patients while burning through savings. The $520,000 net worth gap between them isn't luck—it's the buy vs start decision playing out over five years. This guide gives you the real numbers, the case studies, and the decision framework that prevents expensive mistakes. Not generic pros and cons. Real 5-year projections, real startup costs, real patient acquisition timelines, and the scenarios where starting actually beats buying (they exist, but they're rare).
The Real Financial Comparison
5-Year Net Worth Projection
| Year | Buy Practice (Dr. Torres) | Start Practice (Dr. Chen) | Difference |
|---|---|---|---|
| Year 1 | $85,000 | -$45,000 | $130,000 |
| Year 2 | $195,000 | $12,000 | $183,000 |
| Year 3 | $325,000 | $68,000 | $257,000 |
| Year 4 | $485,000 | $115,000 | $370,000 |
| Year 5 | $685,000 | $165,000 | $520,000 |
How the numbers work:
Buy Scenario (Dr. Torres)
Initial Investment:
- Practice purchase: $1,200,000
- Down payment (10%): $120,000
- Working capital: $25,000
Total cash required: $145,000
Year 1:
- Collections: $950,000
- Overhead: $617,500 (65%)
- Debt service: $132,000
- Owner compensation: $180,000
- Net practice profit: $20,500
- Plus salary: $180,000
- Minus living expenses: $95,000
- Net worth increase: $85,000 (loan paydown + savings)
Year 5:
- Collections: $1,150,000 (+21%)
- Practice value: $1,800,000
- Loan balance: $720,000
- Equity: $1,080,000
- Savings/investments: $85,000
- Total net worth: $1,165,000
Start Scenario (Dr. Chen)
Initial Investment:
- Buildout: $185,000
- Equipment: $220,000
- Technology: $45,000
- Working capital (18 months): $150,000
- Marketing (launch): $35,000
- Licensing, legal, other: $25,000
Total cash required: $660,000
Year 1 (Startup Phase):
- Months 1-6: $8,000/month expenses, $2,000/month revenue = -$36,000
- Months 7-12: $12,000/month revenue, $8,000/month expenses = $24,000
- Year 1 net: -$12,000
- Living expenses (draw from savings): $65,000
- Net worth change: -$77,000
Year 5:
- Collections: $580,000
- Practice value: $680,000
- Startup costs recovered: No
- Net worth: $165,000 (practice equity - remaining debt)
Case Study: The Buy Path Success
Dr. Torres' 5-Year Journey
Year 1 (2020):
- Closed on $950K practice for $1.2M
- Inherited 2,100 active patients
- 4 staff members stayed
- Revenue stable, minor transition loss (8%)
- Net income: $180,000 (salary) + $20,500 (profit)
Year 2 (2021):
- Implemented digital marketing
- Added 340 new patients
- Revenue grew to $1,025,000
- Hired associate to handle overflow
- Net income: $195,000
Year 3 (2022):
- Expanded to 5-day schedule
- Added hygiene department
- Revenue: $1,095,000
- Net income: $225,000
Year 4 (2023):
- Bought adjacent space
- Added 2 operatories
- Revenue: $1,150,000
- Net income: $255,000
Year 5 (2024):
- Practice valued at $1,800,000
- Net income: $285,000
- Works 4 days/week
- Looking at second location
5-Year Results:
- Total net income: $1,145,000
- Practice equity: $1,080,000
- Total wealth created: $2,225,000
- ROI on $145K investment: 1,434%
Case Study: The Startup Struggle
Dr. Chen's 5-Year Journey
Year 1 (2020):
- Opened in April after 3-month buildout
- Grand marketing campaign
- Month 1-3: 12 new patients (disappointing)
- Month 4-6: Improved to 25/month
- Month 7-12: Reached 45/month
- Year-end: 420 active patients
- Revenue: $285,000
- Expenses: $340,000
- Loss: $55,000 (funded from savings)
Year 2 (2021):
- Marketing costs continued high
- New patient flow stabilized at 35/month
- Retention improved
- Year-end: 680 active patients
- Revenue: $420,000
- Expenses: $385,000
- Profit: $35,000
Year 3 (2022):
- Reduced marketing (word-of-mouth kicked in)
- Added hygienist
- Year-end: 820 active patients
- Revenue: $495,000
- Net income: $95,000
Year 4 (2023):
- Growth plateaued
>- Competing practice opened nearby
- Revenue: $540,000
- Net income: $125,000
Year 5 (2024):
- Practice valued at $680,000
- Net income: $145,000
- Works 5.5 days/week
- Considering associateship options
5-Year Results:
- Total net income: $345,000
- Practice equity: $680,000
- Less startup costs: $660,000
- Net wealth created: $365,000
- ROI: 55% (barely beat inflation)
The Real Cost Comparison
| Cost Category | Buy Existing | Start New | Advantage |
|---|---|---|---|
| Initial Cash Required | $120K-$250K | $400K-$800K | Buy (60-70% less) |
| Financing Available | SBA 7(a), conventional | Limited, higher rates | Buy (better terms) |
| Time to Profitability | Immediate | 12-24 months | Buy (immediate cash flow) |
| Patient Base | 1,500-3,000 day one | 0, build over 24 months | Buy (immediate revenue) |
| Staff | Trained team in place | Hire and train | Buy (operational) |
| Equipment | Depreciated but functional | New, warranty | Tie (depends on age) |
| Location Risk | Proven | Unproven | Buy (lower risk) |
| 5-Year Failure Rate | 8% | 25-30% | Buy (much lower) |
When Starting Actually Makes Sense
Despite the numbers, startup is the right choice in specific scenarios:
Scenario 1: Underserved Market
Dr. Park's Success Story
Location: New suburban development
Population: 15,000 new residents, zero dentists
Strategy: First-mover advantage
Result: 1,200 patients in 18 months
Year 3 revenue: $720,000
Why it worked: Zero competition, pent-up demand
Scenario 2: Unique Concept
- Luxury boutique practice
- Specialized niche (sleep apnea, implants)
- Technology-forward model
- Corporate wellness focus
Scenario 3: Geographic Necessity
- No practices for sale in target area
- Specific community commitment
- Rural shortage area
Scenario 4: Significant Capital
- $800K+ available without borrowing
- Can sustain 24-month runway
- Secondary income source
The Decision Framework
Choose Buying If:
| Factor | Your Situation | Buy Recommendation |
|---|---|---|
| Available Capital | $120K-$250K | ✓ Strong fit |
| Risk Tolerance | Low to moderate | ✓ Strong fit |
| Income Need | Need $150K+ year one | ✓ Strong fit |
| Timeline | Want ownership within 6 months | ✓ Strong fit |
| Available Practices | Good practices available in target area | ✓ Strong fit |
| Experience | 0-3 years out of school | ✓ Strong fit |
Choose Starting If:
| Factor | Your Situation | Start Recommendation |
|---|---|---|
| Available Capital | $600K+ without stress | ✓ Strong fit |
| Risk Tolerance | High, entrepreneurial | ✓ Strong fit |
| Income Need | Can live on <$80K for 2 years | ✓ Strong fit |
| Market Opportunity | Underserved area, no competition | ✓ Strong fit |
| Vision | Specific concept not available | ✓ Strong fit |
| Experience | 5+ years, strong reputation | ✓ Strong fit |
Bottom Line
The $520,000 gap between Dr. Torres and Dr. Chen after 5 years isn't an anomaly—it's the expected outcome. Buying provides immediate cash flow, proven location, patient base, and financing. Starting provides control, new equipment, and your vision—but at enormous cost and risk.
The math overwhelmingly favors buying for 85-90% of dentists.
Only start if:
- You have $600K+ in available capital
- No suitable practices exist in your target area
- You have a truly unique concept
- You're in an underserved market
- You can survive 24 months without meaningful income
For everyone else, buying is the faster, safer, more profitable path to practice ownership and wealth creation.
Need help evaluating buy vs start for your situation? Contact DentalBridge for personalized financial modeling and decision support.