The Impact
Stack
Not For Sale’s three-tier operating model — deployed in every country we work, built to move from crisis response to self-sustaining enterprise.
↺ Each tier is built on the one below it — and revenue from the top returns to fund the foundation.
Why does modern-day slavery persist despite decades of effort and billions in funding?
Because most interventions stop at rescue. They pull people from the river but never go upstream to find out why they keep falling in.
Governments, UN agencies, and private donors have committed billions over two decades. Yet more than 50 million people are in modern-day slavery today — more than at any point in human history — while traffickers earn an estimated $236 billion in illegal profits every year. The economics are working for the perpetrators. They are not working for the people being trafficked.
“The most powerful form of prevention is a community with ownership of its own future.”
The principle behind the Impact StackMost organisations operate exclusively in Tier 1. Some add Tier 2. Almost none build Tier 3. The Impact Stack moves through all three — in sequence, in every country, adapted to local conditions.
Social Intervention
Direct service with survivors and people at extreme risk — housing, education, medical care, legal support, nutrition, and safety. This is where most organisations begin and end. Not For Sale begins here, but does not stop.
Research &
Business Development
The question is not “how do we help these people?” It is “why are they vulnerable, and what economic opportunity exists to change that?” After roughly two years of Tier 1 work in a community, Not For Sale tests market-based solutions.
Scalable Ventures
Not For Sale invests in enterprises that create jobs, generate revenue, and build long-term community sustainability. This is the flywheel: ventures return revenue to Not For Sale to fund more Tier 1 work — and the loop closes.
The flywheel.
Enterprise funds service. Service produces research. Research informs enterprise. Each tier feeds the next — indefinitely. This is why the Impact Stack does not require permanent philanthropic subsidy to stay alive.
2007, across all tiers
Stack is deployed
by REBBL alone
planet-tier programs
Where it’s deployed.
Every country name links to its project work.
The model in practice.
Same framework. Different paths. Both work.
to date via REBBL
Not For Sale Netherlands programs
The Montara Circle.
The mechanism Not For Sale uses to move from field research to enterprise creation — and the framework that produced REBBL, Dignita, and the Entrepreneurship Challenge. Two days. One challenge. A company as the output. A nimble framework available to any organisation ready to act.
Fund every tier.
The flywheel only works when every tier is resourced. Your contribution determines which part you power.
Direct service — housing, education, and medical care for survivors and people at extreme risk in Peru, Thailand, the Netherlands, Uganda, the DRC, and beyond.
Donate to Tier 1Community fieldwork and business development — the research that finds the next enterprise. The work that produced AFIMAD and Dignita.
Donate to Tier 2Seeds a venture — creates jobs, returns revenue, and closes the flywheel for a community.
Seed an Enterprise →