CartMath Formulas

Every output the calculator shows, in plain English plus the equation. This page matches public/math.js, the single source of formulas.

Inputs

All percentages are entered as whole numbers (50 = 50%) and stored as decimals. Take rates are the share of buyers who take that step.

FE price = front-end price. CVR = front-end conversion rate.
Commission = affiliate commission % per step (FE, bump, OTO1, DS1, OTO2).
Take = % of buyers who take the bump / OTO1 / DS1 / OTO2.
Refund rate + Refund scope = FE only, or proportional across the whole cart.
Platform fee = one flat % applied to gross per buyer. Default 4.9% (WarriorPlus); presets: JVZoo 5%, ClickBank 9%, or custom.
Visitors + CPC = traffic scale and cost per click.

Funnel revenue

Bump revenue

bump price × bump take (if enabled)

OTO1 revenue

OTO1 price × OTO1 take (if enabled)

DS1 buyers

(1 − OTO1 take) × DS1 take — only when OTO1 and DS1 are both enabled

DS1 revenue

DS1 price × DS1 buyers

OTO2 revenue

OTO2 price × OTO2 take (if enabled)

Per buyer

Gross per buyer

FE price + bump rev + OTO1 rev + DS1 rev + OTO2 rev

Platform fee

gross per buyer × platform fee %

Commission per buyer (affiliate's cut)

FE price × FE comm + bump rev × bump comm + OTO1 rev × OTO1 comm + DS1 rev × DS1 comm + OTO2 rev × OTO2 comm

Refund loss

FE only: FE price × refund rate | Proportional: gross per buyer × refund rate

Net per buyer (vendor's leftover)

gross per buyer − commission − platform fee − refund loss

Per visitor / EPC

Gross per visitor

gross per buyer × CVR

Net per visitor

net per buyer × CVR

Affiliate EPC (derived)

commission per buyer × CVR — what the affiliate actually earns per click after their commission

Break-even CPC

net per visitor

Profit per click

net per visitor − CPC (when CPC > 0; otherwise net per visitor)

Totals

Buyers

visitors × CVR

Gross total

gross per buyer × buyers

Net total

net per buyer × buyers

Ad spend

visitors × CPC (when CPC > 0)

Net after ads

net total − ad spend

Verdict

HOBBY

net per buyer under $20, or net per visitor under $0.40

LIST

net per buyer ≥ $20 and net per visitor ≥ $0.40

PAID

net per buyer ≥ $25 and net per visitor ≥ $1.50

FANTASY

not a dollar verdict — it flags assumptions: OTO1 take > 55%, OTO2 take > 35%, bump take > 55%, refund rate under 3% while OTO1 take ≥ 40%, or CVR > 8%

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