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Fix cumulative platform cost Stripe double-counting

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Split infrastructure vs payment-processing costs. Liquidity burn now
uses infrastructure cash out only (€1,155.20 cumulative) because Stripe
fees are already deducted from net member payments. Total platform cost
(€1,158.24) remains visible for gross-margin economics.
This commit is contained in:
Bernd Worsch
2026-06-22 01:51:53 +02:00
parent fe2174f37a
commit ea2c2c6403
8 changed files with 143 additions and 97 deletions
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51
projects/coulomb-pricing/reports/economics-2026-06.md
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@@ -13,12 +13,15 @@
|--------|------:|
| Active members | 1 |
| Member payments (gross) | 8.99 EUR |
| Platform cost | 72.58 EUR |
| Infrastructure cost | 72.20 EUR |
| Payment processing cost | 0.38 EUR |
| Total platform cost | 72.58 EUR |
| Platform cost per member | 72.58 EUR |
| Period gross margin | -63.59 EUR |
| Period gross margin % | -707.3% |
| Period net liquidity | -63.97 EUR (burning) |
| Period net liquidity | -63.59 EUR (burning) |
_Period net liquidity = net member payments − infrastructure cost (processing fees already netted from payments)._
_Revenue source: manual_
## Liquidity & Budget (through 2026-06)
@@ -27,31 +30,33 @@ _Revenue source: manual_
|--------|------:|
| Initial budget | 1000.00 EUR |
| Cumulative member payments (net) | 68.88 EUR |
| Cumulative platform cost | 1158.24 EUR |
| Cumulative net liquidity | -1089.36 EUR (burning) |
| Remaining budget | -89.36 EUR (over budget) |
| Cumulative infrastructure cost | 1155.20 EUR |
| Cumulative payment processing | 3.04 EUR |
| Cumulative total platform cost | 1158.24 EUR |
| Cumulative net liquidity | -1086.32 EUR (burning) |
| Remaining budget | -86.32 EUR (over budget) |
| Months tracked | 16 |
## Monthly History
| Period | Members | Gross revenue | Platform cost | Net liquidity |
|--------|--------:|--------------:|--------------:|--------------:|
| 2025-03 | 0 | 0.00 | 72.20 | -72.20 |
| 2025-04 | 0 | 0.00 | 72.20 | -72.20 |
| 2025-05 | 0 | 0.00 | 72.20 | -72.20 |
| 2025-06 | 0 | 0.00 | 72.20 | -72.20 |
| 2025-07 | 0 | 0.00 | 72.20 | -72.20 |
| 2025-08 | 0 | 0.00 | 72.20 | -72.20 |
| 2025-09 | 0 | 0.00 | 72.20 | -72.20 |
| 2025-10 | 0 | 0.00 | 72.20 | -72.20 |
| 2025-11 | 1 | 8.99 | 72.58 | -63.97 |
| 2025-12 | 1 | 8.99 | 72.58 | -63.97 |
| 2026-01 | 1 | 8.99 | 72.58 | -63.97 |
| 2026-02 | 1 | 8.99 | 72.58 | -63.97 |
| 2026-03 | 1 | 8.99 | 72.58 | -63.97 |
| 2026-04 | 1 | 8.99 | 72.58 | -63.97 |
| 2026-05 | 1 | 8.99 | 72.58 | -63.97 |
| 2026-06 | 1 | 8.99 | 72.58 | -63.97 |
| Period | Members | Gross revenue | Infrastructure | Processing | Total platform | Net liquidity |
|--------|--------:|--------------:|---------------:|-----------:|---------------:|--------------:|
| 2025-03 | 0 | 0.00 | 72.20 | 0.00 | 72.20 | -72.20 |
| 2025-04 | 0 | 0.00 | 72.20 | 0.00 | 72.20 | -72.20 |
| 2025-05 | 0 | 0.00 | 72.20 | 0.00 | 72.20 | -72.20 |
| 2025-06 | 0 | 0.00 | 72.20 | 0.00 | 72.20 | -72.20 |
| 2025-07 | 0 | 0.00 | 72.20 | 0.00 | 72.20 | -72.20 |
| 2025-08 | 0 | 0.00 | 72.20 | 0.00 | 72.20 | -72.20 |
| 2025-09 | 0 | 0.00 | 72.20 | 0.00 | 72.20 | -72.20 |
| 2025-10 | 0 | 0.00 | 72.20 | 0.00 | 72.20 | -72.20 |
| 2025-11 | 1 | 8.99 | 72.20 | 0.38 | 72.58 | -63.59 |
| 2025-12 | 1 | 8.99 | 72.20 | 0.38 | 72.58 | -63.59 |
| 2026-01 | 1 | 8.99 | 72.20 | 0.38 | 72.58 | -63.59 |
| 2026-02 | 1 | 8.99 | 72.20 | 0.38 | 72.58 | -63.59 |
| 2026-03 | 1 | 8.99 | 72.20 | 0.38 | 72.58 | -63.59 |
| 2026-04 | 1 | 8.99 | 72.20 | 0.38 | 72.58 | -63.59 |
| 2026-05 | 1 | 8.99 | 72.20 | 0.38 | 72.58 | -63.59 |
| 2026-06 | 1 | 8.99 | 72.20 | 0.38 | 72.58 | -63.59 |
## Pricing Model Registry