Europese Centrale Bank · De Nederlandsche Bank

International, relevant to the Netherlands

ECB Data Portal

The European Central Bank's data portal, with over a hundred dataflows: ECB policy rates, exchange rates, inflation (HICP), bank mortgage and savings rates, bank balance sheets, money supply and payments. For the Netherlands it holds figures that De Nederlandsche Bank reports to the ECB, always next to the other euro countries. All through an open SDMX API, no key needed. In September 2026 inflation was 3.0 percent in the Netherlands and 3.8 percent in the euro area.

Finance EconomyOpenAPIDownloadEurope · country (euro countries and euro area), monthly or daily

Behind schedule · updated in September 2026 · checked 17:23

Everything that's in it126

All dataflows in the ECB Data Portal (including the Eurostat and IMF ones the ECB distributes), in the portal's categories, fetched every night. Dataflows the ECB has not categorised are listed separately, split into live and discontinued. Every dataflow has its own page with the SDMX call, for the Netherlands when the dataflow has countries.

126dataflows

4.1 mseries in total

126with an API or map service

Niet ingedeeld door de ECB62

Inflation in the Netherlands: 3.0 percent in September 2026, 0.8 percentage points lower than in the euro area (3.8 percent)

Inflation in the Netherlands and the euro area (HICP, ECB Data Portal), January 2015 – September 2026, in percent. The highest point was September 2022 (17.1).

Source: Europese Centrale Bank, ECB Data Portal (HICP, cijfers van Eurostat) · opgehaald 25 oktober 2026 · selection: HICP totaal, jaar-op-jaarverandering (ANR), niet seizoengecorrigeerd; eurozone = U2 (wisselende samenstelling)Open the table Single block

What you can build with it1

DashboardMonitor for inflation, mortgage rates and savings ratesOne dashboard that shows every month how fast prices rise, what a new mortgage costs and what savings earn, in the Netherlands and the euro area.3 sourcesGetting started

What can you do with it?4 ideas

Getting started

Dutch inflation next to the euro area

Fetch HICP for NL and U2 in one call (key M.NL+U2…). In September 2022 Dutch inflation peaked at 17.1 percent, far above the euro average.

Getting started

Do the Dutch pay more for a mortgage?

The MIR series give the rate on new mortgages per euro country. In August 2026: Netherlands 3.91%, Belgium 3.7%, Germany 4.0%, France 3.2%, euro area 3.6%.

Advanced

Savings rate against inflation

Put the interest rate on Dutch household savings accounts (MIR) next to HICP. The difference is what savers gain or lose in purchasing power.

Advanced

Exchange rate and ECB rate as a timeline

The deposit facility rate (FM, DFR) and the euro-dollar rate (EXR) are daily series. On 16 October 2026 the deposit rate stood at 2.5 percent.

How to process it4 steps

Find the dataflow
The dataflow list (SDMX-XML) names every code: HICP (consumer prices), MIR (bank interest rates), EXR (exchange rates), FM (financial markets), BSI (bank balance sheets).
```
https://data-api.ecb.europa.eu/service/dataflow/ECB
```
Fetch a series as CSV
A series is dataflow + key, with dots between dimensions. Use + to ask for several countries at once; detail=dataonly drops the metadata.
```
https://data-api.ecb.europa.eu/service/data/HICP/M.NL+U2.N.000000.4D0.ANR?startPeriod=2024-01&format=csvdata&detail=dataonly
```
Mortgage rate per euro country
Rate on new housing loans (A2C) to households, all maturities. lastNObservations=1 gives only the latest month.
```
https://data-api.ecb.europa.eu/service/data/MIR/M.NL+DE+BE+FR+U2.B.A2C.AM.R.A.2250.EUR.N?lastNObservations=1&format=csvdata&detail=dataonly
```

Daily euro-dollar rate

ECB reference rate, working days only. On 15 October 2026: 1.1208 dollars per euro.

https://data-api.ecb.europa.eu/service/data/EXR/D.USD.EUR.SP00.A?lastNObservations=5&format=csvdata&detail=dataonly

Interesting combinations

periode (maand)

Do house prices follow the mortgage rate?

Put the MIR mortgage rate next to the CBS price index of existing owner-occupied homes per month and see whether a rate drop shows up in prices later.

Combine with CBS StatLine

landcode

Interest and debt per country

Combine the mortgage rate per euro country with household debt from Eurostat and see where a rate rise hits hardest.

Combine with Eurostat

Similar sources

DNB statistics (De Nederlandsche Bank)
DNB publishes the Dutch figures itself and in more detail (pension funds, insurers), but the DNB API needs a key. At the ECB they are open, next to the other euro countries.
Eurostat
Eurostat produces the HICP and covers all EU countries, also outside the euro. The ECB takes over those figures and adds interest-rate and banking statistics.
CBS StatLine
CBS has the Dutch CPI (the national inflation measure) and much more detail per product group, but no comparison with other countries.

What to watch out for

HICP is not the CPI
The European HICP and the Dutch CBS CPI measure inflation slightly differently (owner-occupied housing, among other things). Always name the measure you use.
Old HICP series stop at the end of 2025
In the ICP dataflow the series ran to December 2025 on 16 October 2026. The current series are in the HICP dataflow, with an extra dimension for the provider (4D0 = Eurostat).
No asterisk in the key
An * as wildcard triggered a firewall block (HTTP 400, 'access has been blocked'). Leave a dimension empty (two dots in a row) or list codes with +.
State your transformations
The ECB terms ask for attribution and that you say what you changed yourself, for example seasonal adjustment or growth rates you computed.
The euro area changes composition
Code U2 is the euro area with changing composition. A long series therefore does not always contain the same countries.

APISDMX 2.1 REST · read 16 Oct 2026

StandardSDMX 2.1 RESTdocs

Access no key

No key or account needed tested

Size105

dataflows in /dataflow/ECB (16 Oct 2026) tested

Formats

csvjsonxml

Base URL

https://data-api.ecb.europa.eu/service

Endpoints 5

GET/data/{dataflow}/{sleutel}Time series. Key = codes in dimension order with dots between; + for several codes, empty for all. E.g. HICP/M.NL+U2.N.000000.4D0.ANR (inflation NL and euro area).
GET/dataflow/ECBAll dataflows with name and data structure (SDMX-ML): HICP, MIR, EXR, FM, BSI …
GET/dataflow/ECB/{dataflow}?references=allOne dataflow with data structure, concepts and code lists (HICP: 700 kB).
GET/datastructure/ECB/{dsd}Data structure, e.g. ECB_EXR1 (exchange rates) or ECB_ICP1 (prices): order of the dimensions.
GET/codelist/ECB/{codelijst}Code list with names, e.g. CL_AREA (countries and areas), CL_CURRENCY, CL_FREQ.

Filtering tested

Series key in the path: one position per dimension, dots between, + for several codes, empty for all codes. No *. Time with startPeriod/endPeriod or lastNObservations.

Parameters 9

`startPeriod`	Start: 2024, 2024-Q1, 2024-01, 2024-W01, 2024-01-15 (per frequency).	tested
`endPeriod`	End, same notation.	tested
`lastNObservations`	At most N observations per series, from the latest.	tested
`firstNObservations`	At most N observations per series, from the oldest.	from the description
`updatedAfter`	Only what was added, revised or deleted since this moment (percent-encoded, e.g. 2026-10-01T00:00:00%2B01:00). Each row then gets an ACTION column.	tested
`detail`	full (default), dataonly (no attributes), serieskeysonly (only which series exist), nodata.	tested
`includeHistory`	true also returns earlier versions, with VALID_FROM and VALID_TO per value: shows when a figure appeared or was revised.	tested
`format`	csvdata, jsondata (SDMX-JSON), structurespecificdata, genericdata (default, SDMX-ML). Or via the Accept header: text/csv, application/json.	tested
`references`	For structure queries: none, parents, children, descendants, all.	from the description

Columns in format=csvdata (HICP) 9

Name	Type	Meaning
`KEY`	tekst	Volledige reekssleutel, bv. HICP.M.NL.N.000000.4D0.ANR
`FREQ`	code	D dag, M maand, Q kwartaal, A jaar
`REF_AREA`	code	Land (ISO2: NL, DE, BE) of U2 = eurozone (wisselende samenstelling)
`ICP_ITEM`	code	HICP: productgroep, 000000 = totaal
`DATA_PROVIDER`	code	HICP: leverancier, 4D0 = Eurostat
`ICP_SUFFIX`	code	HICP: ANR = jaarmutatie in procent, INX = index
`TIME_PERIOD`	periode	2026-09, 2026-10-15
`OBS_VALUE`	getal · volgt uit de reeks (procent, koers …)	De waarde
`OBS_STATUS`	code	Status van de waarneming (alleen met detail=full)

Limits and pitfalls

No key and no documented request limit. Compression with Accept-Encoding: gzip, deflate. from the description
If you keep a local copy, use updatedAfter to fetch only the changes, or send If-Modified-Since (304 if nothing changed). We still got a 200 with If-Modified-Since, because the series had been updated that day. from the description
An * as wildcard in the key triggered a firewall block (HTTP 400, HTML 'access has been blocked'). Leave a dimension empty or list codes with +. experience
No series found = 404 with application/problem+json: 'No Series was returned for the query'. tested
robots.txt (redirected to data.ecb.europa.eu) disallows the user agents curl, Wget, python-requests, axios, Go-http-client and Java, but allows others. Set your own User-Agent with a contact address in your code (curl -A, requests headers). tested
Dataflow ICP ran to December 2025 on 16 Oct 2026. Current HICP is in dataflow HICP with an extra dimension DATA_PROVIDER (4D0): September 2026 NL 3.0%, euro area 3.8%. tested
With Accept: application/json and no format you get SDMX-JSON; without Accept and format SDMX-ML (genericdata). Use format=csvdata&detail=dataonly for a small table. tested
MIR (bank rates per euro country, from DNB for NL): new mortgage rate M.NL.B.A2C.AM.R.A.2250.EUR.N, August 2026 3.91%. Euro-dollar rate: EXR/D.USD.EUR.SP00.A (working days only). tested

Try it HTTP 200 · 559 ms · 16 Oct

https://data-api.ecb.europa.eu/service/data/HICP/M.NL+U2.N.000000.4D0.ANR?lastNObservations=3&format=csvdata&detail=dataonly

KEY,FREQ,REF_AREA,ADJUSTMENT,ICP_ITEM,DATA_PROVIDER,ICP_SUFFIX,TIME_PERIOD,OBS_VALUE
HICP.M.NL.N.000000.4D0.ANR,M,NL,N,000000,4D0,ANR,2026-07,3
HICP.M.NL.N.000000.4D0.ANR,M,NL,N,000000,4D0,ANR,2026-08,2.8
HICP.M.NL.N.000000.4D0.ANR,M,NL,N,000000,4D0,ANR,2026-09,3
HICP.M.U2.N.000000.4D0.ANR,M,U2,N,000000,4D0,ANR,2026-07,2.9
HICP.M.U2.N.000000.4D0.ANR,M,U2,N,000000,4D0,ANR,2026-08,3.2
HICP.M.U2.N.000000.4D0.ANR,M,U2,N,000000,4D0,ANR,2026-09,3.8

Shortened response, saved at harvest time. Click the URL for the real, current response.

Read from ECB: data query (key, startPeriod, updatedAfter, lastNObservations, detail, includeHistory, format) · ECB: structure queries (dataflow, datastructure, codelist, references) · ECB: formats via the Accept header and compression · ECB: status codes (304, 400, 404, 406, 501 …). Labels: from the description stated in what the api itself publishes. tested from our own small call. platform applies to every api on this platform, per its documentation. experience learned while building open data index.

How to fetch it

curl "https://data-api.ecb.europa.eu/service/data/HICP/M.NL+U2.N.000000.4D0.ANR?lastNObservations=3&format=csvdata&detail=dataonly"