Most first-year startup budgets fail in the same way. The owner builds a spreadsheet that grows production steadily from month one, applies an overhead percentage borrowed from a benchmark table, and concludes the practice is profitable by month seven. Then reality arrives: production ramps slower than planned, collections trail production by six weeks or more, fixed costs are fully present from day one regardless of volume, and the loan payment starts before the schedule fills.
The fix is not optimism or pessimism. It is modeling the right shape. This post walks through the cash flow shape of a first year, gives a hypothetical month-by-month budget you can adapt, and explains the collections lag that surprises nearly every new owner.
If you have not yet chosen between building and buying, start with startup vs acquisition. If you are already committed, our startup timeline and the free Practice Startup 101 course cover the sequencing this budget assumes.
Key takeaways
- Your fixed costs are 100% present from the day you open. Only supplies, lab, and some staff hours scale with volume.
- Collections lag production. Insurance claims take weeks to pay, and patient balances longer, so month one's collections reflect very little of month one's production.
- Working capital is a line item, not a cushion you hope you do not need. Most lenders expect it and most owners underestimate it.
- Model three scenarios: base, slow ramp, and fast ramp. The slow ramp is the one that tells you how much working capital you actually need.
- Cash breakeven (covering all expenses plus debt service plus owner draw) comes months after accounting breakeven. Know both dates.
- Marketing spend is front-loaded and disproportionate in year one. A mature practice's marketing percentage is the wrong benchmark for a startup.
The four numbers that define the shape
Before any spreadsheet, get clear on four things.
1. New patient flow
Everything downstream depends on this. A startup typically opens with a small number of patients (friends, family, transfers from a prior job where permitted, and early marketing response), then adds new patients monthly. Production is a function of the cumulative patient base, not a number you choose.
Two mistakes are common here. The first is assuming a high new patient count from month one. The second is assuming every new patient produces the same amount; in reality early new patients often bring accumulated treatment needs, which is good for production and hard on your case acceptance and scheduling systems at exactly the moment you have the least support.
2. Production per patient
This depends on your procedure mix, your fee schedule, and what share of patients are insured and at what write-off. A startup with a heavy PPO mix produces at a lower net than the same chair time at full fee. Model net production (after contractual adjustments), not gross.
3. The collections lag
Production is what you do. Collections are what arrives in the bank. The gap is a function of your payer mix and how well your billing runs.
| Source | Typical timing from date of service | Notes |
|---|---|---|
| Patient portion collected at the visit | Same day | The only immediate cash. This is why collecting at time of service matters more in a startup than anywhere else. |
| Electronic claim, clean, in-network | Commonly two to four weeks | Assumes correct credentialing and a clean claim |
| Claim requiring attachments or a narrative | Four to eight weeks | See common denials |
| Denied claim, appealed | Two to four months | Or never, if nobody works the aging report |
| Patient balance after insurance | Statement cycle plus payment behavior, often 30 to 90 days | Longer without a clear financial policy |
| Third-party patient financing | Often within days | At a merchant discount. See patient financing options. |
The credentialing trap is the biggest single cash risk in a startup's first six months. If you open before your PPO contracts are effective, claims process out of network or deny, and the money either arrives late or never. Start credentialing three to six months before your target open date, and model a scenario where two of your plans are not effective until month four.
4. Fixed vs variable costs
This is the distinction that makes a startup budget behave differently from a mature one.
| Category | Behavior in year one |
|---|---|
| Rent and common area charges | Fully fixed from the day the lease starts, which may be before you open |
| Loan payments (principal and interest) | Fixed. Note that principal does not appear on the P&L but very much leaves the bank account. |
| Insurance, software, IT, phones | Fixed, mostly |
| Core staff wages | Effectively fixed. You cannot run a practice with a fraction of a front desk person. |
| Hygiene wages | Semi-variable. Add days as the recall base grows, not before. |
| Dental supplies | Variable, roughly with production, though a startup's early supply spend includes stocking up |
| Lab fees | Variable, and lumpy. A single month with three crown cases seated changes the line. |
| Marketing | A choice, but front-loaded in year one by necessity |
| Owner compensation | Often deferred or minimal for the first several months. Budget it honestly rather than pretending you live on air. |
Pre-opening: the spend before revenue exists
Before month one there is a period, often six to twelve months, of spending with zero revenue. Financing usually covers most of it, but the timing matters for your draw schedule. Broad categories:
- Buildout and construction, typically the largest line. See buildout and operatory design.
- Equipment and technology. Our operatory cost post and operatory cost estimator put ranges on this, and new vs used covers where to save.
- Practice management software, hardware, network, and installation. See IT setup and our software comparison.
- Initial supply and instrument stock, which is larger than a month of ongoing supply spend.
- Professional fees: attorney, CPA, architect, dental equipment planner.
- Licensing, permits, x-ray registration (see x-ray registration), and entity formation.
- Pre-opening marketing: website, branding, signage, initial advertising, Google Business Profile setup.
- Pre-opening payroll: hiring and training staff one to three weeks before you see patients.
- Deposits: lease security deposit, utility deposits, insurance down payments.
- Working capital, the cash reserve that funds operating losses until you reach cash breakeven.
Ask your lender how working capital is structured in your loan. Some practice startup loans include a working capital tranche; some expect you to fund it. Some include an interest-only period for the first six to twelve months, which materially changes your first-year cash flow. Our startup financing post and loan calculator cover the structures.
The month-by-month shape
Year one has four recognizable phases.
| Phase | Months | What is happening | Cash position |
|---|---|---|---|
| Opening | 1 to 2 | Light schedule, heavy emergency and exam mix, systems being learned, first claims submitted | Worst of the year. Full fixed costs, minimal collections. |
| Early ramp | 3 to 5 | New patient flow establishing, first completed treatment plans, hygiene base starting to form | Improving but still negative. First claims paying. |
| Acceleration | 6 to 9 | Recall from the first cohort begins returning, larger cases completing, second hygiene day possible | Approaching cash breakeven |
| Stabilizing | 10 to 12 | Predictable schedule, real recall base, decisions about adding hours or staff | Cash positive in a good scenario; owner begins a real draw |
Note the most important structural feature: your first cohort of patients does not come back for hygiene until month seven at the earliest. A practice that opens in January sees its first recall wave around July. That is when the schedule starts to fill itself rather than being filled entirely by new patients, and it is the inflection point in most startup budgets.
Hypothetical example: a first-year budget
Every number below is invented for illustration. It is a single-doctor general practice, four operatories with three equipped, open four clinical days a week, with a moderate PPO mix. Do not treat these figures as benchmarks; build your own with your own rent, loan, and fee schedule.
Production and collections
| Month | New patients | Net production | Collections | Collections as % of that month's production |
|---|---|---|---|---|
| 1 | 18 | $24,000 | $8,000 | 33% |
| 2 | 22 | $32,000 | $19,000 | 59% |
| 3 | 25 | $41,000 | $30,000 | 73% |
| 4 | 26 | $48,000 | $40,000 | 83% |
| 5 | 28 | $55,000 | $48,000 | 87% |
| 6 | 28 | $61,000 | $55,000 | 90% |
| 7 | 30 | $68,000 | $62,000 | 91% |
| 8 | 30 | $73,000 | $67,000 | 92% |
| 9 | 31 | $79,000 | $73,000 | 92% |
| 10 | 31 | $84,000 | $78,000 | 93% |
| 11 | 32 | $88,000 | $82,000 | 93% |
| 12 | 32 | $92,000 | $86,000 | 93% |
| Year 1 total | 333 | $745,000 | $648,000 | 87% |
Two things to notice. First, the collections-to-production ratio starts terribly and improves as the pipeline fills, not because billing gets better but because you are now collecting last month's work while producing this month's. By month twelve it settles near a steady-state ratio. Second, the year-one gap between production and collections, about $97,000 in this example, is mostly still sitting in accounts receivable at the end of the year. That is real money you have earned and not received, and it is a permanent feature of the business, not a year-one problem.
Monthly operating expenses
| Expense | Month 1 | Month 6 | Month 12 | Behavior |
|---|---|---|---|---|
| Rent and CAM | $6,000 | $6,000 | $6,000 | Fixed |
| Staff wages and payroll taxes | $14,000 | $18,000 | $24,000 | Steps up as hygiene days and hours are added |
| Dental supplies | $3,500 | $4,000 | $5,500 | Variable, with month 1 inflated by stocking |
| Lab | $500 | $4,000 | $7,000 | Variable and lumpy, low early because few crowns are seated in month 1 |
| Marketing | $6,000 | $4,500 | $3,500 | Front-loaded, tapering as recall and referrals build |
| Software, IT, phones | $1,400 | $1,400 | $1,600 | Mostly fixed |
| Insurance (malpractice, business) | $900 | $900 | $900 | Fixed |
| Utilities and waste | $800 | $850 | $900 | Nearly fixed |
| Professional fees (CPA, legal) | $800 | $600 | $600 | Fixed-ish |
| Merchant and bank fees | $200 | $1,100 | $1,700 | Scales with collections |
| Equipment repairs and service | $0 | $300 | $500 | Low in year one under warranty |
| Office supplies, postage, misc | $700 | $600 | $700 | Semi-fixed |
| Total operating expenses | $34,800 | $42,250 | $52,900 | |
| Loan payment (principal + interest) | $7,500 | $7,500 | $7,500 | Assumes no interest-only period |
| Total cash out, before owner draw | $42,300 | $49,750 | $60,400 | |
| Collections | $8,000 | $55,000 | $86,000 | |
| Monthly cash surplus or deficit | ($34,300) | $5,250 | $25,600 | Before owner draw |
Read the month 1 number carefully. A $34,300 cash deficit in the first month is not a sign of failure; it is the expected shape. What matters is how many months of deficit you have funded. In this hypothetical, the cumulative deficit across months one through five is roughly $90,000 to $100,000 before the practice turns cash positive, and that is before the owner takes a dollar. Add owner living expenses and the working capital requirement grows accordingly.
The two breakeven dates
| Definition | In this hypothetical | |
|---|---|---|
| Accounting breakeven | Collections cover operating expenses (interest counts, principal does not) | Around month 5 |
| Cash breakeven | Collections cover operating expenses plus the full loan payment | Around month 6 |
| True breakeven | Collections cover everything plus a livable owner draw | Around month 8 to 9 if the draw is modest |
Lenders and advisors often quote the first number. You live on the third. Know all three dates in your model and tell your spouse or partner which one you are planning around.
How much working capital do you actually need
Working capital is the cumulative cash deficit from opening to cash breakeven, plus a buffer, plus your personal living expenses if you are not drawing a salary.
The right way to size it is to build the slow-ramp scenario and read the number off the bottom of the cumulative cash line. A practical approach:
- Build your base case month by month.
- Build a slow case: new patients at 60% to 70% of your base assumption, and one payer's credentialing delayed by three months.
- Find the deepest point of the cumulative cash line in the slow case.
- Add your personal monthly expenses for the number of months until you can draw.
- Add a buffer of at least three months of fixed costs.
- That total is your working capital requirement.
The most common startup failure is not a bad practice. It is a good practice that ran out of cash in month seven. Ramping slower than plan is normal. Being unable to make payroll while ramping slower than plan is fatal. If your lender's working capital figure feels thin against your slow-case model, negotiate it up before closing, not after. Increasing a loan after funding is much harder.
Where first-year budgets go wrong
- Modeling collections as equal to production. The single biggest error. Build the lag explicitly.
- Using a mature practice's overhead percentage. A 60% overhead benchmark describes a practice at scale. A startup at $24,000 of monthly production has overhead well above 100% of collections, and that is fine. See overhead benchmarks for what the mature target looks like.
- Forgetting loan principal. Principal is a cash outflow that never appears on the P&L. A practice can show accounting profit and still be short of cash. Our financial management chapter covers this distinction in detail.
- Underfunding marketing. In year one, marketing is how you get patients at all. A startup commonly spends a much higher percentage than the 3% to 5% often cited for mature practices. See how much to spend on marketing.
- Hiring a full team on day one. Paying a full staff to see six patients a day burns working capital fast. Start lean and add as the schedule justifies it, with a written trigger for each hire.
- Ignoring quarterly estimated taxes. Once profitable, estimated tax payments start. Set the cash aside as you go.
- No line for the unexpected. A compressor fails, a hygienist quits in month four, a build-out punch list item costs $8,000. Budget a contingency.
- Not tracking against the budget. A budget you build once and never compare to actuals is a wish. Review monthly.
What to track weekly in year one
In a mature practice you can manage monthly. In a startup, monthly is too slow.
Weekly startup scorecard
- New patients this week, and cumulative against plan
- Production and collections, week and month to date
- Cash in the operating account and weeks of runway at current burn
- Accounts receivable over 30, 60, and 90 days
- Claims submitted, claims paid, claims denied and why
- Percent of patient portion collected at the visit
- Treatment presented vs treatment scheduled
- Next two weeks of schedule: open hours by column
- Any credentialing application still pending and its status
Our practice dashboard post covers how to build this into a routine you can sustain past year one, and the KPI post covers which numbers earn their place long term.
The second-year handoff
The year-one budget ends with three questions to carry into year two:
- Is the recall base real? Count patients with a scheduled or due recall, not total charts. That number is your year-two production floor.
- Where is the constraint? Doctor days, hygiene capacity, operatories, or new patient flow. Year two spending should go at the constraint, not everywhere. Our hygiene capacity post helps with one common version.
- What did the slow case teach you? If you tracked against both scenarios, you now know your practice's actual ramp rate, which is a far better input for year two than any benchmark.
Where to go from here
Build your own version of the two tables above before you sign a lease. The exercise is worth more than the output, because it forces you to name every fixed cost and every assumption about ramp speed.
Related on ChairsideSource: financing a practice startup for loan structures and working capital, the Practice Startup 101 course for the whole sequence, the real startup timeline for how the pre-opening months fit together, and financial management for practice owners for reading the statements once you are open.
This is general business information, not financial, tax, or legal advice. Every figure here is a hypothetical illustration. Build your projections with a CPA who works with dental practices and review loan terms with your own attorney.
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.