Mental Health Practice input evidence register
43 financial inputs with their assumptions, calculation bases and cited sources.
Case updated October 3, 2026. These notes accompany the complete case methodology and source register.
Dataset use notice: no Creative Commons license or DOI is asserted. Referenced material remains subject to its publisher’s terms.
These notes explain the opening budget, annual forecast and calculator assumptions. Linked sources provide the support described in each note; they do not necessarily confirm the selected amounts. Check scenario assumptions against local quotes and operating records.
- Model assumption
Applies to: Total opening budget · Lower opening budget · Upper opening budget · Lease deposits and preopening occupancy · Office adaptation and acoustic privacy · Consultation and reception furnishings · Entity, licensing, insurance and launch setup
Authored opening allocations for a fitted 1,600 sq ft group office: lease/setup $12,000, adaptation/acoustic privacy $35,000, furniture $18,000, professional/licensing/insurance/launch $13,000. Sources support planning categories and functional requirements, not dollar quotes. With $12,000 IT and $250,000 reserve, sum is $340,000. The $180,000 low case uses reusable fitted space and staged payroll; the $550,000 high case needs heavier adaptation and a longer funded ramp. Different scopes of commitment, not measured percentiles.
- Model assumption
Applies to: Secure IT, records and software setup
Authored $12,000 initial allocation: $6,000 for five secure workstations, $2,000 network/access/backup and $4,000 implementation and records/software setup. A live EHR price supplies recurring product context, not these hardware and implementation quotes; initial setup is separate from annual subscription expense.
- Model assumption
Applies to: Opening operating cash reserve
Authored $250,000 operating reserve. The monthly operating calculation tests the peak ramp deficit plus a conservative 45-day mature earned-revenue exposure and leaves a residual buffer. Collection delay is an assumption, not observed receivable days. This allowance is not a dated cash-flow proof; replace it with actual receipt and bill dates.
- Model assumption
Applies to: Realized fee per completed psychotherapy session (base scenario) · Realized fee per completed psychotherapy session (lower sensitivity) · Realized fee per completed psychotherapy session (upper sensitivity)
Selected realized session fees are authored: psychologist $180 and each counselor $140, at the same five completed daily sessions, produce a $150 blend. Observed Austin self-pay terms are $150 regular and $200 for one clinician; they are neither insured allowances nor collections. The $110–$190 range tests lower-payer/discounted and higher-self-pay mixes within the same licensed therapy scope, requiring local evidence.
- Model assumption
Applies to: Completed sessions per day across all four clinicians (base scenario) · Completed sessions per day across all four clinicians (lower sensitivity) · Completed sessions per day across all four clinicians (upper sensitivity) · Trading days per week (base scenario) · Trading days per week (lower sensitivity) · Trading days per week (upper sensitivity)
Authored capacity: four licensed clinicians × six hourly blocks daily × five days × 4.33 weeks = 519.6 potential monthly sessions. Mature completed volume 20/day = five per clinician; the 12–24 range tests incomplete booking to the stated ceiling. Fifty-minute conversation and ten-minute record/turnaround allocation within each block is a planning assumption, not treatment-duration or billing advice. Remaining paid hours cover non-session work; the four-day option is a reduced calendar, not a larger workload compressed without review.
- Model assumption
Applies to: Monthly fixed operating costs
Selected $50,000/month equals $480,000 annual payroll divided by 12 plus $120,000 annual overhead divided by 12. Wage base: paid psychologist owner $110,000, three licensed counselors $75,000 each and administrator $45,000 = $380,000; authored 20% employer-cost allowance adds $76,000 and paid relief adds $24,000. National occupational medians and IRS employer obligations contextualize, not verify, those assumptions. Overhead breakdown is in the annual evidence; no owner labor is omitted.
- Model assumption
Applies to: Contribution margin
Selected 95% contribution follows an authored 5% variable share for billing/claims/payment charges and session supplies. Clinical salaries are fixed payroll, not deducted again. Price adjustments/noncollection are already reflected in the realized fee; the variable share must change with actual processing and billing terms and is not a national margin benchmark.
- Model assumption
Applies to: Opening sales as a share of mature volume · Monthly increase toward mature volume · Forecast horizon (months)
Authored 40% opening completed-session share plus six percentage points monthly, capped at full mature volume; 18-month public calculator horizon. The shared function generates the ramp. National need does not verify conversion or ramp speed; no opening cohort or probability is observed.
- Model assumption
Applies to: Revenue (Years 1–5) · Variable billing, payment and session supplies (Years 1–5)
Earned revenue is the shared completed-session ramp at $150 × 20/day × five days/week × 4.33 weeks/month, summed into five 12-month periods and rounded to whole USD. Variable cost is 5% of each annual earned revenue, rounded once. Years 2–5 hold the mature clinical team, fee and volume constant. Sources provide service/payment/software context; the financial values are authored scenario results stored as required annual inputs, not market observations.
- Model assumption
Applies to: Clinicians, paid owner, administration and relief (Years 1–5)
Each annual period includes $480,000 paid payroll: $380,000 wage base, $76,000 selected employer-cost allowance and $24,000 relief. Owner $110,000; three counselors $75,000 each; administrator $45,000. BLS medians are occupational context and do not prove a recruiting budget; IRS payroll taxes are only part of total employer cost. Relief availability and leave schedule require local verification.
- Model assumption
Applies to: Office, records systems, insurance and support (Years 1–5)
Authored annual overhead $120,000: rent/common charges $48,000 (1,600 sq ft × $30/year), utilities $3,600, insurance $12,000, EHR/records software $6,000, communications $3,600, outreach $18,000, legal/accounting $12,000, cleaning/repairs $7,800 and professional development/consultation $9,000. Current four-clinician EHR standard base is $321/month; chosen $500/month allows additional systems. General-office national asking rent is $38.38/sq ft, so the selected $30 is a modest fitted-office assumption, not a national average. All remaining allocations need site/vendor terms. Constant nominal prices are used as a constant-dollar planning convention.