Multi-currency accounts · Payouts · Treasury

Banking infrastructure your finance team can actually operate.

Larkfield gives you multi-currency accounts, scheduled payouts and treasury sweeps behind one API — with the reconciliation, approvals and audit trail your controller already asked for.

Open an account Read the API reference

One ledger, four surfaces

Everything settles against the same double-entry ledger, so the dashboard, the API, the exports and your accounting integration never disagree.

/v1/accounts

Multi-currency accounts

Named virtual accounts per entity, customer or cost centre. USD, USD and USD held at partner institutions with per-account Accounts.

/v1/payouts

Payouts & batches

ACH, wire and SWIFT from one call. Batch up to 10,000 instructions with per-item status and idempotent retries.

/v1/treasury

Treasury sweeps

Rules-based sweeps between operating and reserve balances, with target floors and automatic FX at booked rates.

/v1/fx

FX at live rates

Lock a quote for up to 60 seconds, settle against it, and get the spread broken out on every transaction record.

approvals

Policy & approvals

Per-role limits, dual authorisation above a threshold, and a signed audit record of who approved what.

webhooks

Events you can trust

Signed, ordered, replayable webhooks with a 30-day event log and at-least-once delivery guarantees.

Move money in four lines

payout.sh

# Send $2,400 to a saved beneficiary
curl -X POST https://api.larkfieldcapital.com/v1/payouts \
  -H "Authorization: Bearer $JW_API_KEY" \
  -H "Idempotency-Key: 8f21c0e4" \
  -d '{"account_id":"acc_9Kd2","beneficiary":"ben_71Qa",
       "amount":240000,"currency":"USD","rail":"ach"}'

201 Created

{
  "id": "po_3Nq8Lx2Vd",
  "status": "submitted",
  "amount": 240000,
  "currency": "USD",
  "rail": "ach",
  "expected_settlement": "2026-08-29T14:02:11Z",
  "ledger_entry": "le_77bQ21"
}