The only express-tunnel acquisition model built around membership-cohort economics — churn, penetration, ARPU, and a 10-year levered IRR your lender can actually underwrite.
Every SBA lender underwriting a $1–3M express-tunnel deal asks the same questions. None of the $25–$50 templates answer them.
A third-party feasibility study from firms like Wert-Berater or Car Wash Advisory runs $5K–$10K and takes weeks. That's before you've even tied up the site. Most first-time buyers can't justify it — but still need defensible projections for SBA.
Existing $25–$100 templates bolt "membership revenue" onto a startup pro forma. They don't model cohort churn, retail→member conversion, or penetration-to-multiple tiers — the exact numbers underwriters ask about when valuing a subscription book.
A seller's pro forma showing 60% penetration and 3% churn looks plausible on paper. Against industry benchmarks — ~7.6% monthly churn and sub-20% penetration at most single sites — it collapses immediately. You need the benchmarks to see that fast.
Your lender doesn't care about 3-year hockey sticks. They want DSCR coverage, debt amortization, and a 10-year levered IRR structured around an acquisition price with 85% LTV. That's not in any generic car wash template.
Six tabs. Live formulas. Industry benchmarks sourced and embedded. Change one input — every number updates.
Purchase price, SBA leverage, member ARPU, initial penetration, retail ticket, daily car count, and cost assumptions. One tab to drive everything else.
Lender-ready120 months of member vs. retail revenue. Monthly cohort churn (benchmarked at 7.6%), retail→member conversion, and ARPU sensitivity. The core of any real tunnel valuation.
Industry benchmarksRevenue through labor, chemicals, utilities, R&M, and fixed costs to EBITDA. Margin sanity checks against operator benchmarks at each line item.
Benchmark-linkedFull SBA 7(a)/504 debt waterfall: purchase price, 85% LTV, 15% equity, amortization schedule, annual DSCR coverage, and levered free cash flow.
SBA 7(a) / 50410-year levered cash flows, exit at penetration-tiered EBITDA multiple (5–6× sub-20%, 7–8× above 40%), levered IRR, and equity multiple. The single output your LP or lender reads first.
Returns summaryPrint-clean summary: levered IRR, equity multiple, min DSCR, member penetration, ARPU. Plus a churn × penetration stress grid showing how sensitive returns are to each benchmark.
Print / PDF readyThe churn rate, penetration tiers, EBITDA multiples, and SBA LTV assumptions embedded in this model come from industry operators, car wash advisors, and acquisition case studies — not from a founder's optimism. When a seller's pro forma contradicts them, you'll see it instantly.
If you're heading to a lender without a defensible model, this is the gap it fills.
Acquiring your 1st or 2nd site, $1–3M enterprise value, financing via SBA. You need projections your lender will accept but can't justify a $10K feasibility study.
Screening 5–10 deals and need a model that stress-tests a seller's membership claims against real benchmarks before you spend a dollar on due diligence.
Clients show up without projections. A structured model they can complete in an afternoon is faster than sending them back for a study — and it's defensible.
No subscription. Instant download. Works in Excel 2016+ and Google Sheets. A feasibility study is $5,000 — this is $99.
Paste in the seller's claimed churn, penetration, ARPU, EBITDA margin, and asking multiple. We check every figure against ICA, Ad Astra Equity, and Car Wash Advisory benchmarks — and flag what doesn't add up.