Adaptive contribution

What if price could adapt to real needs?

Contributions can be adjusted based on the group's real needs and rules decided together — not a fixed rate set in advance.

Conventional system

Cascade system

Objective: €145

Total conventional system: €271

Total cascade system: €145

Lucas
Marie
Sophie
Thomas
Léa
Chloé
€126 saved collectivelythanks to Cascade
How it works

Four ingredients, one automatic calculation.

Adaptive contribution isn't a case-by-case discount: it's an explicit rule, applied by Cascade to every member of the group.
1

A collective goal

The group sets the total amount to cover: shared expenses, group purchases, operating budget.

2

A distribution rule

Percentage of income, family quotient, tiered scale, or free contribution with a solidarity floor: each group chooses its own rule.

3

An automatic calculation

Cascade applies the rule to each member and recalculates their contribution as soon as a profile or the goal changes.

4

An adjustment at any time

The goal or the rule can change along the way; contributions readjust without any re-entry.

Possible rules

Each group chooses its own formula.

Cascade doesn't impose a scale: it applies the one the group has decided on, and enforces it for every contribution.

Percentage of income

Everyone contributes in proportion to what they declare.

Family quotient

The amount takes household composition into account, as with a daycare center.

Tiered scale

Tiers defined in advance, from the most supportive to the most comfortable.

Free contribution with a solidarity floor

Everyone gives what they can, above a guaranteed minimum for the group.

In practice

The same mechanism, very different uses.

These amounts are the ones used elsewhere on this site to illustrate each use case — the rule changes, the mechanism stays the same.

Community space

Shared expenses

38 — 62 € / month depending on how shared spaces are used

CSA

Solidarity basket

8 — 16 € / week to keep access open to everyone

Cooperative

Pooled fund

10 — 25 € / month depending on ongoing projects

Parent-run daycare

Missed care-shift compensation

15 — 45 € / month depending on uncovered care shifts

Do you manage a space or resources collectively?

Find out if Cascade can meet your needs.

2026 Cascade — under the Coopyleft license.