Moeda Social Arariboia
Municipal social currency of Niterói, Brazil, paying permanent income transfers to more than 54,000 vulnerable families in a digital currency pegged 1:1 to the Brazilian real. Arariboias can only be spent at over 8,000 registered local businesses, keeping roughly R$300 million a year circulating in neighborhood commerce — more than R$500 million flowed through the network in its first three years. Operated on the E-dinheiro community-banking platform pioneered by Banco Palmas and inspired by neighboring Maricá's Mumbuca.
The largest active municipal social currency in Brazil after Maricá's Mumbuca: a permanent, debt-free, basic-income-style transfer paid in a locally-locked digital real that measurably concentrates spending in peripheral commerce. Structurally it remains a custodial, fiat-pegged state program — strong on inclusion and real-economy traction, weak on sovereignty and fiat independence.
M69 Score
Scored against the Money2069 Manifesto — see methodology. Higher = more aligned.
Detailed Rating Breakdown
Issuance Model3x3.0
Debt-free fiscal issuance (IM-02:5) — transfers funded by the municipal budget, not credit — but a single state issuer (IM-01:1) with discretionary, need-based supply rather than an economic-activity rule (IM-03:2); merchants redeem to reais so supply contracts on redemption (IM-05:4).
Spending Power Stability2x3.0
Hard 1:1 peg to the Brazilian real held since 2021 via full municipal backing; benchmark is a single moderate-inflation fiat (SPS-02:2) so purchasing power imports BRL inflation, partially offset by discretionary raises (5% in 2024, 12% in 2025).
Fiat Independence & Interoperability2x1.0
Fully fiat-denominated and fiat-funded; runs on card/app rails with bank redemption (FI-01:1, FI-02:1). Only a sliver of FI-07 credit via the multi-community E-dinheiro platform.
Traction2x3.0
54,000+ beneficiary families, 8,000+ accepting businesses (TR-04:4), R$500M+ circulated in three years, program made permanent and expanded after the 2024 election (TR-01:5); but pricing stays in reais (TR-05:2) and adoption is transfer-driven, not organic (TR-09:2).
Sovereignty1.0
City-controlled custodial system with CadÚnico identity gating; the municipality can freeze, alter, or end the program unilaterally (SO-01:1, SO-04:1).
Governance2.0
Anchored in municipal law with public budget accountability (GO-01:3, GO-03:3), but no participant governance and monetary parameters changeable by ordinary city decision-making (GO-02:1, GO-08:2).
Resilience3.0
Survived a mayoral transition and was expanded rather than cut (RE-01:3); funded at ~R$300M/yr from a strong oil-royalty municipal budget (RE-07:3), but wholly dependent on one city government and one platform vendor.
Inclusivity4.0
Designed for and reaching the financially excluded (IN-03:5) at zero user cost (IN-02:5), with benefits flowing to the poorest (IN-04:5); participation as beneficiary is means-tested and CadÚnico-gated (IN-01:2, IN-06:2).