Soldo Business Spend Management API
Soldo business spend management REST API for European SMBs and mid-market companies to manage prepaid Mastercard cards, employee spending, and expense reporting with real-time spend controls and accounting integration. Enables AI agents to manage prepaid card issuance and wallet funding for business spend automation, handle real-time spend controls and transaction limits for cost center budget automation, access employee expense submission and receipt attachment for expense management automation, retrieve transaction categorization and accounting code assignment for bookkeeping automation, manage wallet hierarchy and fund allocation for budget distribution automation, handle automated accounting software sync (Xero, QuickBooks, Sage) for expense-to-ledger automation, access multi-currency card transactions for international spend management automation, retrieve spend analytics and reporting by team and cost center for financial reporting automation, manage card suspension and replacement for card lifecycle automation, and integrate Soldo with accounting platforms and ERP systems for end-to-end business spend control.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Business spend. GDPR, PSD2, FCA EMI. OAuth2. EU/UK. Card, wallet, and expense data.
⚡ Reliability
Best When
A European SMB or mid-market company wanting AI agents to automate prepaid card management, employee spend controls, expense capture, and accounting software synchronization within Soldo's business spend platform.
Avoid When
PSD2 SCA FOR CARD-NOT-PRESENT TRANSACTIONS: Soldo Mastercard transactions in EEA are subject to PSD2 SCA for card-not-present; automated online purchasing workflows using Soldo cards may encounter SCA challenges for new merchants; automated procurement agents using Soldo cards for online vendor payments must handle SCA challenge events; 3DS authentication flow required for SCA-triggered transactions. PREPAID WALLET FLOAT REGULATORY CLASSIFICATION: Soldo operates as an e-money institution; float held in Soldo wallets is e-money, not bank deposits; automated treasury management that treats Soldo wallet balances as bank deposits creates accounting misclassification; e-money balances are safeguarded but not FDIC/FSCS insured in the traditional sense. CARD FUNDING LATENCY FOR AUTOMATED SPEND: Soldo wallet funding via bank transfer has processing latency (1-2 business days for standard transfers, faster for direct bank connections); automated spend workflows that require immediate card funding must pre-fund wallets; automated just-in-time wallet funding for time-sensitive purchases creates card decline if funding has not yet settled.
Use Cases
- • Issuing prepaid cards from business spend control agents
- • Enforcing spend limits from real-time budget control agents
- • Syncing expenses from accounting software integration agents
- • Tracking team budgets from cost center reporting agents
Not For
- • Enterprise large-ticket procurement and AP (use Coupa or SAP Ariba)
- • Consumer personal finance cards (business-only platform)
- • US-only businesses without European operations
Interface
Authentication
Soldo uses OAuth 2.0 for API access. REST API with JSON. London, UK HQ with offices in Dublin and Rome. Founded 2015 by Carlo Gualandri. Backed by Battery Ventures, Accel, Dawn Capital ($180M+ raised). Products: Prepaid Mastercard cards, wallets, spend controls, expense reporting. FCA-authorized e-money institution. EMI passport for EU operations. Serves 25,000+ SMBs and mid-market companies. Integration: Xero, QuickBooks, Sage, NetSuite. GDPR. SOC2. Competes with Pleo, Spendesk, and Payhawk for European business spend management.
Pricing
London UK. Battery Ventures, Accel backed. Per-user subscription. Free Starter plan. FCA e-money institution.
Agent Metadata
Known Gotchas
- ⚠ WALLET HIERARCHY FUNDING SEQUENCE: Soldo uses a wallet hierarchy (company wallet → team wallets → employee wallets); automated wallet funding must fund from top of hierarchy down; automated direct employee wallet funding without sufficient company wallet balance creates funding failure; maintain company wallet buffer for automated employee wallet top-up workflows
- ⚠ REAL-TIME TRANSACTION WEBHOOK vs SETTLED TRANSACTION RECONCILIATION: Soldo webhooks fire on card authorization (real-time) and on settlement (typically T+1 for Mastercard); automated accounting sync should use settled transaction data, not authorization webhooks, to avoid booking uncaptured authorizations; automated expense posting on authorization webhook creates reversed entries when authorizations are voided or modified
- ⚠ MULTI-CURRENCY TRANSACTION FX RATE APPLICATION TIMING: Soldo multi-currency transactions apply Mastercard exchange rate at settlement, not authorization; automated foreign currency expense reporting must use settled FX rate, not authorization-time estimate; automated expense reporting using authorization-time FX estimate creates FX variance in accounting records
- ⚠ ACCOUNTING SYNC DUPLICATE PREVENTION FOR MANUAL ENTRIES: Soldo accounting sync creates entries in Xero/QuickBooks; manually created entries in accounting software for the same transactions before Soldo sync creates duplicates; automated accounting sync deployment must disable or remove manual expense entry processes to prevent duplicate accounting entries
- ⚠ CARD VIRTUAL vs PHYSICAL ISSUANCE LEAD TIME: Soldo virtual card issuance is immediate via API; physical card issuance has postal delivery lead time (5-10 business days in UK/EU); automated card issuance for employee onboarding must account for physical card lead time; automated same-day procurement workflows must use virtual cards rather than waiting for physical card delivery
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Scores are editorial opinions as of 2026-03-07.