Venture cash trajectory · monthly resolution

The J-curve of a
venture-backed fintech

Early losses from investment and customer acquisition, followed by steep scaling. The fixed parameters set the depth of the valley; the sliders let you play with price, seed, acquisition — and the investor's terms. The investor isn't playing for dividends, they're playing for the exit: their slice of the company is worth a multiple of revenue, and the big amber button marks the month that slice first grows past the cheque they wrote. From there it's pure upside. The horizontal axis is time (months); the J itself is the cumulative cash line.

Fixed parameters

The givens of the market and operations. These set the shape and depth of the curve.

Starting customers N₀

Monthly churn rate 2.0%

Monthly burn (fixed cost) $/mo

Play with these

The startup's upfront decisions. Move them and watch whether the J turns back up before the cash runs out.

Revenue / customer $25/mo

Seed investment $2Menter in $K

Growth rate 14%/mo

Acquisition cost (CAC) $90/customer

Investor equity 20%stake

Exit valuation multiple 6×× ARR

The investor plays for the exit: they hold a stake in the company, and are made whole when that stake — equity × an m× revenue multiple — grows past the seed they put in. The big amber button on the J marks that month; beyond it, every extra dollar of value is the investor's gain.

Aggressive growth deepens the valley first (you pay CAC upfront), then powers the steep upswing once the base compounds. That tension is the J.

Net growth (g − c)

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LTV / CAC ratio

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Bottom of the J

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Break-even month

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Investor exit payback · stake (equity × multiple × ARR) clears the seed

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Cumulative cash (the J-curve) Break-even line ($0) Customer base Monthly revenue (MRR) Exit payback (investor made whole)

Base: N(t) = N(t-1)·(1 + g − c) · Revenue: R(t) = p·N(t)
Profit: π(t) = p·N(t) − CAC·g·N(t-1) − burn · J-curve: C(t) = seed + Σπ
Investor stake at exit: e · m · 12 · p · N(t) · repaid (exit button) when e · m · 12 · p · N(t) ≥ seed