---
title: "Average interest rates paid on US Treasury securities, by security type"
method: GET
path: "/v1/us/treasury-rates"
---

# Average interest rates paid on US Treasury securities, by security type

`GET /v1/us/treasury-rates`

## Request

- Base URL: `https://data.greeneris.io` (the document declares no server; this is the origin it was published from)
- URL: `https://data.greeneris.io/v1/us/treasury-rates`
- Auth: none declared

Monthly average interest rates the US Treasury pays on its outstanding securities, from the official FiscalData API (Average Interest Rates dataset, updated monthly). Query: ?security=Treasury Bills (exact security_desc, optional; e.g. Treasury Notes, Treasury Bonds) &since=2026-01-01 (optional record_date floor) &limit=12 (1-100, newest first). Returns record_date, security type/name and avg rate in percent. Cached 24h.

## Query parameters

- `security` string
- `since` string
- `limit` integer

## Response `200`

Successful response

- unknown

---

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