`tax.prizes.schedule`

The T4A summary schedule for a calendar year { year } as a CSV: winner, legal name, SIN or business number, address, amount, box 028 and payment dates. Numbers are masked. reveal { reason } shows full numbers to an administrator in the dashboard or to the accountant, and is audited with the reason.

POST/api/v1/accounting/tax.prizes.schedule

Permissions

accounting:readaccounting:write

Who can call it

admin, finance

Retries

No idempotency key

MCP

Not offered over MCP: Winners' full tax numbers.

Fields

yearintegerRequired
2000 to 2200
revealobject
No other fields

curl https://app.getoatmilk.com/api/v1/accounting/tax.prizes.schedule \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "year": 2026
}'

const response = await fetch("https://app.getoatmilk.com/api/v1/accounting/tax.prizes.schedule", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.OATMILK_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "year": 2026
  }),
});
const { data, error } = await response.json();
if (!response.ok) throw new Error(`${error.code}: ${error.message}`);
console.log(data);

import os

import requests

response = requests.post(
    "https://app.getoatmilk.com/api/v1/accounting/tax.prizes.schedule",
    headers={
        "Authorization": f"Bearer {os.environ['OATMILK_API_KEY']}",
    },
    json={
        "year": 2026,
    },
    timeout=30,
)
payload = response.json()
if not response.ok:
    raise RuntimeError(f"{payload['error']['code']}: {payload['error']['message']}")
print(payload["data"])

Response

{
  "data": { … }
}

Try it

Checks your input with this action’s real schema and answers like the API, with synthetic data. No key needed, and nothing changes.

Input

POST/api/v1/accounting/tax.prizes.schedule

curl https://app.getoatmilk.com/api/v1/accounting/tax.prizes.schedule \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "year": 2026
}'

const response = await fetch("https://app.getoatmilk.com/api/v1/accounting/tax.prizes.schedule", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.OATMILK_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "year": 2026
  }),
});
const { data, error } = await response.json();
if (!response.ok) throw new Error(`${error.code}: ${error.message}`);
console.log(data);

import os

import requests

response = requests.post(
    "https://app.getoatmilk.com/api/v1/accounting/tax.prizes.schedule",
    headers={
        "Authorization": f"Bearer {os.environ['OATMILK_API_KEY']}",
    },
    json={
        "year": 2026,
    },
    timeout=30,
)
payload = response.json()
if not response.ok:
    raise RuntimeError(f"{payload['error']['code']}: {payload['error']['message']}")
print(payload["data"])

Fields

Fields inside reveal

Example

Try it