IESET.
Hypotheses·growth·africa_kenya_mpesa_digital_payments_formalisation_2007_2024

Kenya's 2007 launch of M-Pesa and subsequent build-out of mobile-money rails (2007-2024) produced a measurable acceleration in financial inclusion, household consumption smoothing, and informal-to-formal transition relative to Sub-Saharan African peers without comparable mobile-money penetration.

The pre-registered claim is that, in a synthetic- control design with a SSA peer donor pool (Uganda, Tanzania, Rwanda, Ethiopia, Nigeria, Ghana, Senegal), Kenya's account-ownership share of adults rises by at least 30 percentage points more than the synthetic counterfactual by 2021 (Findex round) AND domestic credit to private sector share of GDP rises by at least 6 percentage points more than counterfactual by 2024. The null counter-claim is that Kenya's financial- inclusion gain is the SSA-region pattern (mobile-money diffused widely) and not a Kenya-specific premium attributable to first-mover advantage.

PARTIALengine/runs/africa_kenya_mpesa_digital_payments_formalisation_2007_2024

PARTIAL — mean_gap=+399.5, |gap|/pre_sd=12, p_perm=0.75 (gap below 0.5×pre_sd or placebo p≥0.10)

confidence cueThe result is useful, but not decisive. Treat it as a clue, not a settled conclusion.

policy briefMixed or noisy

In ordinary language

Over a long period, do more market-oriented institutions translate into higher income or productivity, once the comparison looks beyond a single success story?

plain answer

The evidence is suggestive but not decisive. mean_gap=+399.5, |gap|/pre_sd=12, p_perm=0.75 (gap below 0.5×pre_sd or placebo p≥0.10)

why it matters

Growth claims can look convincing in single success stories. This test asks whether the pattern survives a broader comparison.

how the test works

It compares 8 country or place units from 2000 to 2024, using a synth did design.

what was measured
What changed
  • Mpesa launch indicator
  • Mobile money accounts per 1000 adults
What we checked
  • Account ownership adult share
  • Domestic credit private share income
  • Real income pc
what this does not prove

A single test is not the whole truth. It narrows the claim under a specific sample, time period, and method. Strong policy conclusions need the pattern to survive nearby tests, alternative data, and serious objections.

verification

No evidence packet has been generated yet.

Results

engine/runs/africa_kenya_mpesa_digital_payments_formalisation_2007_2024
1007550250200020122024KENUGATZARWAETHNGAGHA
illustrative sketch · run pending
No coefficients yet. When the model fires, this chart will show account_ownership_adult_share across 8 sampled countries over 2000–2024.
The shapes above are stylised — none of the lines are real data.
Placeholder for africa_kenya_mpesa_digital_payments_formalisation_2007_2024. Published chart will be generated from engine/runs/africa_kenya_mpesa_digital_payments_formalisation_2007_2024/chart_data.json.

Pre-registration

registration ordering unverified
first-spec commit 4c8ce8e · 2026-07-18T22:11:21Z
run generated · 2026-04-30T10:15:29Z
Run timestamp predates this path's first git-add commit (rebase, rename, or pre-git local run). Spec hash is still the path's first-add commit — not repository HEAD — but ordering is not a clean pre-registration proof.

Kenya's 2007 launch of M-Pesa and subsequent build-out of mobile-money rails (2007-2024) produced a measurable acceleration in financial inclusion, household consumption smoothing, and informal-to-formal transition relative to Sub-Saharan African peers without comparable mobile-money penetration. The pre-registered claim is that, in a synthetic- control design with a SSA peer donor pool (Uganda, Tanzania, Rwanda, Ethiopia, Nigeria, Ghana, Senegal), Kenya's account-ownership share of adults rises by at least 30 percentage points more than the synthetic counterfactual by 2021 (Findex round) AND domestic credit to private sector share of GDP rises by at least 6 percentage points more than counterfactual by 2024. The null counter-claim is that Kenya's financial- inclusion gain is the SSA-region pattern (mobile-money diffused widely) and not a Kenya-specific premium attributable to first-mover advantage.

Falsification criterion — what would disprove this

set before the run · honoured after

This hypothesis is considered falsified if:

Not supported if EITHER (a) the synth-DiD gap on account_ownership_adult_share by 2021 Findex round is less than 30 ppts at p_perm < 0.10, OR (b) the gap on domestic_credit_private_share_gdp by 2024 is less than 6 ppts, OR (c) the gap on real_gdp_pc cumulative growth 2007-2024 is statistically indistinguishable from the SSA donor pool (p_perm > 0.20), indicating M-Pesa drove financial inclusion but did not raise the level of GDP.

formal test & threshold
test:      synth_did_dual_outcome_with_growth_secondary
threshold: CATT_2021(account_ownership) >= 30 ppts AND CATT_2024(credit_private_share_gdp) >= 6 ppts AND p_perm < 0.10 on both

Method

Template
synth_did
Clustering
country
Sample
8 countries · 2000 – 2024
Evidence type
causal

Primary: synth_did with KEN treated from 2007 and SSA donor pool. Secondary: Callaway-Sant'Anna DiD. Tertiary: panel FE with mobile-money-penetration as intensity treatment. Robustness excludes Ethiopia (closed-regime confound) and excludes Uganda/Tanzania (early M-Pesa-Tanzania rollout 2008 contaminates control).

Data

VariableSourceTransform
account_ownership_adult_share
outcome
world_bank_wdi:FX.OWN.TOTL.ZStier 2
level
domestic_credit_private_share_gdp
outcome
world_bank_wdi:FS.AST.PRVT.GD.ZStier 2
level
real_gdp_pc
outcome
world_bank_wdi:NY.GDP.PCAP.KDtier 2
pwt:rgdpetier 3
log_level
poverty_headcount_215_2017ppp
outcome
world_bank_wdi:SI.POV.DDAYtier 2
level
mpesa_launch_indicator
treatment
constructed:1 for KEN from 2007 onwardtier 5
binary
mobile_money_accounts_per_1000_adults
treatment
world_bank_wdi:FB.CBK.BRWR.P3tier 2
log_level
real_gdp_pc_2000_baseline
control
world_bank_wdi:NY.GDP.PCAP.KDtier 2
average_2000_2006
urbanisation_share
control
world_bank_wdi:SP.URB.TOTL.IN.ZStier 2
level
secondary_education_enrolment
control
world_bank_wdi:SE.SEC.ENRRtier 2
level
mobile_subscriptions_per_100
control
world_bank_wdi:IT.CEL.SETS.P2tier 2
level

● ready  · ● pending  · ● reconstruct-needed

Detailed result card

Result card — africa_kenya_mpesa_digital_payments_formalisation_2007_2024

Verdict: PARTIAL — mean_gap=+399.5, |gap|/pre_sd=12, p_perm=0.75 (gap below 0.5×pre_sd or placebo p≥0.10)

Pre-registration

  • Claim: Kenya's 2007 launch of M-Pesa and subsequent build-out of mobile-money rails (2007-2024) produced a measurable acceleration in financial inclusion, household consumption smoothing, and informal-to-formal transition relative to Sub-Saharan African peers without comparable mobile-money penetration. The pre-registered claim is that, in a synthetic- control design with a SSA peer donor pool (Uganda, Tanzania, Rwanda, Ethiopia, Nigeria, Ghana, Senegal), Kenya's account-ownership share of adults rises by at least 30 percentage points more than the synthetic counterfactual by 2021 (Findex round) AND domestic credit to private sector share of GDP rises by at least 6 percentage points more than counterfactual by 2024. The null counter-claim is that Kenya's financial- inclusion gain is the SSA-region pattern (mobile-money diffused widely) and not a Kenya-specific premium attributable to first-mover advantage.
  • Falsification rule: Not supported if EITHER (a) the synth-DiD gap on account_ownership_adult_share by 2021 Findex round is less than 30 ppts at p_perm < 0.10, OR (b) the gap on domestic_credit_private_share_gdp by 2024 is less than 6 ppts, OR (c) the gap on real_gdp_pc cumulative growth 2007-2024 is statistically indistinguishable from the SSA donor pool (p_perm > 0.20), indicating M-Pesa drove financial inclusion but did not raise the level of GDP.

Synthetic-control estimate

  • shape: synth_did
  • treated_country: KEN
  • event_year: 2007
  • n_donors: 7
  • donor_weights (top): {'SEN': 0.7712, 'ETH': 0.2288, 'UGA': 0.0, 'TZA': 0.0, 'RWA': 0.0}
  • pre_rmse: 307.7168424576378
  • pre_period_sd: 32.7099576356624
  • mean_post_gap: 399.45453409914785
  • end_period_gap: 491.9275503024612
  • post_period_years: [2007, 2024]
  • placebo_p_value: 0.75
  • n_placebos: 7
  • method: synthetic-control via NNLS, permutation inference

Variables resolved

  • world_bank_wdi:NY.GDP.PCAP.KD; pwt:rgdpe → real_gdp_pc (outcome, n=14131)
  • world_bank_wdi:NY.GDP.PCAP.KD → real_gdp_pc_2000_baseline (controls, n=14131)
  • world_bank_wdi:SP.URB.TOTL.IN.ZS → urbanisation_share (controls, n=17030)
  • world_bank_wdi:SE.SEC.ENRR → secondary_education_enrolment (controls, n=8230)

Generated by scripts/run_synth_did.py at 2026-04-30T10:15:29+00:00

Strongest opposing argument

Every hypothesis ships with its charitable opposing argument. The framework earns credibility by handling objections at their strongest, not weakest.

Notes

Findex is quadrennial; the synth-DiD effectively has 4 post-treatment data points on account ownership (2011, 2014, 2017, 2021). Power is limited; the spec uses a 30- ppt gap threshold deliberately large to compensate. Tanzania's M-Pesa 2008 rollout is the main contamination risk — Tanzania is in the donor pool but actively treated too; robustness drops it.

Authored framework. Read the transparency note.