1. Central bank exchange rates
  2. National Bank of Poland
  3. ISK

National Bank of Poland Icelandic Króna rate

1 ISK = 0.031918 PLN −0.09%

Published Tuesday, 29 September 2026 as the average exchange rates (table A).

1 PLN = 31.3303 ISK

ISK to PLN over the last year

0.030.032Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.031948
52-week low
0.028382
52-week average
0.029635
Change over the year
+6.02%

Yearly averages

The mean of each year’s publications, 1 ISK in PLN. Open a year for every daily rate and the monthly averages.

YearAverageHighLowPublications
2026 0.029796 0.031948 0.028569 189
2025 0.029321 0.030117 0.028263 251
2024 0.028854 0.029971 0.027829 252
2023 0.030483 0.032593 0.028451 251
2022 0.032984 0.034975 0.030443 252
2021 0.030433 0.031961 0.028767 254
2020 0.028822 0.031602 0.026780 255
2019 0.031323 0.032469 0.029927 251
2018 0.033457 0.035632 0.030148 252
2017 0.035405 0.038230 0.033196 251
2016 0.032730 0.038052 0.030178 252
2015 0.028615 0.030788 0.027136 254
2014 0.027025 0.027903 0.026090 252
2013 0.025886 0.027327 0.023960 251
2012 0.026053 0.028515 0.023992 252
2011 0.025522 0.028805 0.023718 252
2010 0.024741 0.026672 0.022278 255
2009 0.025308 0.034172 0.022069 255
2008 0.028466 0.039824 0.019917 254

This rate via API

The National Bank of Poland ISK rate for any day since 2 January 2008, or every publication in a range of up to a year, as JSON or CSV.

Get a free API key API documentation 
curl https://api.currencyapi.com/v3/official \
  -G -d source=nbp -d base_currency=ISK \
  -d currencies=PLN -d date=2026-09-29 \
  -H "apikey: YOUR-API-KEY"

# every publication of 2026
curl https://api.currencyapi.com/v3/official/range \
  -G -d source=nbp -d currencies=ISK \
  -d date_from=2026-01-01 -d date_to=2026-12-31 \
  -H "apikey: YOUR-API-KEY"

Icelandic Króna at other central banks

Questions about this rate

What is the National Bank of Poland ISK rate today?

On 29 September 2026 the National Bank of Poland published 1 ISK = 0.031918 PLN (1 PLN = 31.3303 ISK).

What was the average ISK rate in 2026?

The average of the 189 publications in 2026 is 1 ISK = 0.0297958 PLN, the simple mean of the daily rates.

Is this the rate I must use for tax or accounting?

That depends on your jurisdiction. Many rules name a specific bank and day, for example the rate published on the business day before the transaction. Use the date lookup in the API to get exactly the publication your rule asks for.