SUNAT Exchange Rate (apis.net.pe) API

Free API for the official SUNAT exchange rate used in Peruvian tax filings: buying and selling PEN/USD rates for the current or any past date. No key, tested example.

No API key requiredHTTPSFree tier

Endpoint tested and returned HTTP 200 on 21 Aug 2026

What is the SUNAT Exchange Rate (apis.net.pe) API?

apis.net.pe republishes the SUNAT official exchange rate as a free JSON API with no key. It returns the buying and selling rate between the Peruvian sol and the US dollar for the current or a specified date.

SUNAT is Peru's tax authority, and the rate it publishes is the one Peruvian invoices and tax filings are converted at. That makes this a compliance number rather than a market number: it changes once a day, it is what an auditor will check against, and a live market quote is the wrong thing to substitute for it however much fresher it looks.

The response is deliberately tiny — five fields, no envelope, no pagination. The one operational quirk is that requesting a `fecha` SUNAT has not published yet returns HTTP 404 rather than an empty result, so a job that always asks for today will fail on weekends, Peruvian holidays and early mornings. Omitting `fecha` entirely returns the latest published rate and sidesteps the whole problem.

Quick facts

Base URL: https://api.apis.net.pe/v1
Authentication: No key required for the public exchange rate endpoint. Some other endpoints on the same host are token-gated.
Rate limit: Throttled per IP without a published figure. The rate changes once per working day, so cache it.
Pricing: Free for the public exchange rate endpoint.
CORS: Not enabled — call it from your server
Official docs: Read the docs

How to use the SUNAT Exchange Rate (apis.net.pe) API

Every request below was executed against the live API on 21 Aug 2026, and the response shown is the real body it returned — not an illustration.

1. Current official SUNAT PEN/USD rate

GET https://api.apis.net.pe/v1/tipo-cambio-sunat

curl

curl 'https://api.apis.net.pe/v1/tipo-cambio-sunat'

JavaScript (fetch)

const res = await fetch("https://api.apis.net.pe/v1/tipo-cambio-sunat");
if (!res.ok) throw new Error(`Request failed: ${res.status}`);
const data = await res.json();
console.log(data);

Python (requests)

import requests

res = requests.get("https://api.apis.net.pe/v1/tipo-cambio-sunat", timeout=20)
res.raise_for_status()
print(res.json())

Response — HTTP 200

{
  "origen": "SUNAT",
  "compra": 3.351,
  "venta": 3.361,
  "moneda": "USD",
  "fecha": "2026-08-21"
}

Parameters

Parameter	Type	Required	Description
`fecha`	query	Optional	Date in `YYYY-MM-DD` for a historical rate. Omit it to get the latest published rate, which avoids 404s on non-publication days. `2026-08-20`

Response fields

origenstring: Source of the figure — `SUNAT`.
compranumber: Official buying rate, soles per US dollar.
ventanumber: Official selling rate. The gap to `compra` is the official spread.
monedastring: The quoted currency, `USD`.
fechastring: The date this rate applies to, which may be earlier than the date you asked for.

What you can build with the SUNAT Exchange Rate (apis.net.pe) API

Convert invoice amounts for Peruvian tax filing at the accepted rate
Reconcile accounting entries against the official rate for a booking date
Show the SUNAT rate alongside a live market quote for comparison
Fill a currency field in an electronic invoicing pipeline

Common errors and how to fix them

404 with a `fecha`

SUNAT has not published a rate for that date.

Fix: Weekends, Peruvian holidays and today-before-publication all 404. Omit `fecha` for the latest, or step back a working day.

429

Per-IP throttling.

Fix: The rate changes daily at most. Cache it for the day rather than fetching per request.

Fields missing

You called a different endpoint on the same host.

Fix: Only the exchange rate endpoint is key-free; the RUC and DNI lookups on apis.net.pe require a token.

SUNAT Exchange Rate (apis.net.pe) API — frequently asked questions

What is the SUNAT exchange rate?

It is the official rate published by Peru's tax authority and used to convert foreign-currency amounts in invoices and tax filings. It updates once per working day and is a compliance reference, not a live market quote.

Is this API free?

The exchange rate endpoint is free and needs no key. Other endpoints on the same host, such as company lookups, do require a token.

Why do I get a 404 for today's date?

SUNAT publishes on working days and not instantly at midnight. Requesting an unpublished date returns 404 rather than an empty body — omit `fecha` to get the most recent published rate instead.

What is the difference between compra and venta?

`compra` is the buying rate and `venta` the selling rate. Which applies depends on the direction of the transaction being converted; Peruvian accounting rules specify which to use in each case.

Tools that pair with this API

VAT Calculator

Add VAT to a net price or extract VAT from a gross amount. Preset 5%, 10%, 20% and 23% rates plus custom, showing net, VAT and gross values instantly.

Invoice Generator

Create a professional invoice with line items, tax and totals, then export a clean PDF — all in your browser. Free invoice generator, nothing uploaded.

JSON Formatter

Format, beautify and minify JSON online with 2-space, 4-space or tab indentation. Sort keys alphabetically and catch syntax errors instantly — free and private.

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SUNAT Exchange Rate (apis.net.pe) is an independent third-party service and is not affiliated with ByteTools or ByteVancer. Details on this page were verified on 21 Aug 2026; always check the official documentation before relying on this API in production, as terms and limits can change.