Synthesis
What we know about guaranteed and basic income pilots
Stockton, Finland, Manitoba, Kenya, and beyond — what randomized and quasi-experimental evidence says about unconditional cash to working-age adults.
7 experiments synthesized · 6 positive, 1 mixed, 0 null, 0 negative
Guaranteed income proposals have moved from policy fringe to mainstream debate in less than a decade, largely on the strength of a handful of randomized and quasi-experimental pilots. The evidence base is now substantial enough to draw real conclusions, while remaining thin enough that almost any policy claim still finds at least one trial to point to.
The reliable findings across studies are that monthly unconditional cash transfers (a) do not substantially reduce labor force participation in working-age adults, (b) reduce volatility in household consumption rather than increasing it, and (c) produce measurable improvements in psychological wellbeing and food security. The contested findings are about scale, employment effects in tight labor markets, and how durable the effects are once transfers end.
What is striking across the literature is how often results that would have been politically inconvenient have been honestly reported by the institutions that ran the trials — including Finland's null result on employment and Stockton's mixed full-time-employment findings. That is the standard the field should aim to maintain.
Takeaway
Cash-transfer pilots can be designed and evaluated rigorously, and the existing evidence does not support the strongest claims of either advocates or critics. Pilots remain the most honest way to advance the debate.
The underlying experiments
Positive findings
6 experiments- Positive
Stockton SEED Guaranteed Income Pilot
SEED (Stockton Economic Empowerment Demonstration) · Stockton, CA, USA · 2021
Effect: Full-time employment: +28 percentage points over control by month 12; income volatility reduced; anxiety and depression scores improved significantly
- Positive
Stockton SEED — Guaranteed Income Pilot
University of Tennessee / University of Pennsylvania EPRC · Stockton, CA, USA · 2019
Effect: Full-time employment: 28% treatment vs. 25% control at baseline; 40% treatment vs. 37% control at 12 months — treatment group employment increased more. Income volatility: significantly lower in treatment group. Mental health: significantly better (anxiety and depression scores). Physical health: no significant difference. Spending: primarily on food, clothing, utilities — not alcohol or cigarettes.
- Positive
Finland Universal Basic Income Experiment
KELA (Social Insurance Institution of Finland) · Finland · 2018
Effect: Employment: +6 days/year (modest positive); well-being score: +0.09 SD; trust in institutions: significantly higher; mental health symptoms: meaningfully reduced
- Positive
GiveDirectly — Large-Scale Basic Income in Rural Kenya
GiveDirectly / Princeton / MIT / UC Berkeley · Siaya County, Kenya · 2016
Effect: Consumption: +30% vs. baseline; assets: +40% in asset values; food security: significantly improved; psychological wellbeing: large positive effects on stress and happiness; hours worked: no reduction; local economic spillovers: significant — control villages within treated areas also showed consumption increases (~$2.50 for every $1 transferred, via multiplier effects)
- Positive
EITC Expansion and Labor Supply
U.S. Treasury / NBER researchers · United States · 1993
Effect: Labor force participation of single mothers increased 7.2 percentage points; among single mothers with less than high school education, +8.7pp
- Positive
Manitoba Mincome — Guaranteed Annual Income
University of Manitoba / Canadian federal and Manitoba governments · Manitoba, Canada · 1974
Effect: Hospitalization rates fell 8.5% relative to control communities; mental health hospitalizations fell significantly; domestic violence-related hospitalizations fell; high school completion increased; labor supply: only small reductions, primarily among mothers (who delayed return to work after childbirth) and teenagers (who stayed in school longer)
Open questions
- Do the wellbeing effects sustain after transfers end, or do they fade?
- How do effects differ in tight labor markets versus slack ones?
- What is the right comparison — to status-quo benefits, to in-kind aid, or to nothing?
If you've run a pilot that speaks to any of these, submit it to the registry.
Related policy areas