tenancy
POST /v1/orgs/{orgId}/billing-currency
Change what this organization is invoiced in.
Authentication
Send an API key as a bearer token. The key must carry the billing.payment.manage permission; a key without it is refused with 403, not 404.
Where your organisation id goes
This endpoint takes your organisation id in the URL itself, as orgId. Substitute it into the path — there is no header or query parameter that will do instead.
Your organisation id is on the API keys screen in your dashboard, beside the key itself. It is the same id in every call you make.
Try it
Replace anything in angle brackets with your own values, and the key placeholder with a key from your dashboard.
curl -X POST https://api.zinndigital.com/v1/orgs/{orgId}/billing-currency \
-H "Authorization: Bearer zdk_live_…" \
-H "Content-Type: application/json" \
-d '{ "currency": <string> }'Signed in? The API console in your dashboard fills in your real organisation id and your own key, and runs the request against the live API so you can see the actual response. Open this endpoint in the API console
Details
⚖️ Owner ruling 2026-08-31 (W37-V). A customer may re-denominate their own organization. Three things happen and they are deliberately different: 1. **Invoices already issued are frozen.** An invoice is a legal document with a number; its currency, FX stamps and tax treatment stay as issued, for ever. ⚠️ An invoice that is still DUE keeps its old currency and will be collected in it — `invoices_left_in_old_currency` reports how many, so the screen can say so rather than let the customer discover it on a bill. 2. **Live subscriptions re-price from the CATALOGUE**, not by FX-converting the locked price. The catalogue's per-currency price is the number a page displayed and the business chose; a converted one would be invented and would drift on every rate move. A subscription whose plan has no price in the target currency is left in its original currency and counted in `subscriptions_unpriced` — never zeroed. 3. **Wallet credit is converted** at the day's rate, per purse, as a draw-down in the old currency plus a grant in the new sharing one reference. Credit is held per `(org, currency)` and currencies are never mixed, so leaving it would strand real money the customer could no longer spend. ⛔ A dedicated route rather than a field on `PATCH /v1/orgs/{orgId}`: a rename writes one column, this moves money. It requires `billing.payment.manage` — the person who may correct a typo in the account name is not necessarily the person who may re-denominate the balance. An org you cannot reach answers 404, not 403. ⭐ Send `dry_run: true` to get exactly these numbers **without** applying anything. The preview runs the real conversion inside a transaction it then rolls back, so it cannot disagree with the commit.
Parameters
| Name | Type | Required | What it is |
|---|---|---|---|
orgId (path) | Uuid | Yes | Organization ID (UUIDv7). |
Request body
| Name | Type | Required | What it is |
|---|---|---|---|
currency | string | Yes | ISO-4217, the currency to invoice this organization in from now on. Must be one we can actually charge — enabled in the registry, not policy-blocked, and presentable by at least… |
dry_run | boolean | No | Compute the change and report it **without applying it**. ⭐ The preview runs the real conversion in a transaction it rolls back, so the figures a customer confirms are the figur… |
Response
| Name | Type | Required | What it is |
|---|---|---|---|
dry_run | boolean | Yes | True when nothing was applied. |
from_currency | string | Yes | — |
to_currency | string | Yes | — |
rate | string | Yes | Units of `to_currency` per unit of `from_currency`, to ten decimal places. ⛔ A **string**: JSON has no decimal type, and a float here would be the one place in this path that br… |
converted | ConvertedPurse[] | Yes | The purses that moved. A purse whose balance rounds to zero in the target currency is **left alone** and is absent here — debiting it would destroy the customer's credit. |
subscriptions_repriced | integer | Yes | Live subscriptions now priced from the catalogue in the new currency. |
subscriptions_unpriced | integer | Yes | Live subscriptions whose plan has **no** price in the target currency. Left untouched in their original currency — never converted, never zeroed. |
invoices_left_in_old_currency | integer | Yes | Issued invoices keeping the old currency, by design. Includes any still due. |
Errors this endpoint can return
401 · 403 · 404 · 422 · 429