jokull/fjarmalalaesi

Fjarmalalaesi is a skill you can plug into an AI agent to help with Icelandic personal finance, a system with rules that generic financial calculators get wrong. The name means financial literacy in Icelandic, and the project's goal is letting anyone point an AI at their own numbers and get answers that actually match how money works in Iceland. Iceland has some unusual quirks: mortgages are commonly tied to inflation, so the amount you owe can grow over time rather than shrink with every payment. Most workers are covered by union agreements that set wage floors and benefits. Pensions come in three separate layers, each taxed and means tested differently. And tax on any extra income depends heavily on what other income it lands on top of. This skill is built specifically to handle those details correctly. It covers reading a payslip line by line and understanding wage rights, working through pension pillar choices including a special savings option with a mortgage related tax benefit, correctly modeling inflation linked mortgages using real bank data, understanding how Icelandic income tax brackets stack, comparing banks and savings options, and understanding safety net programs like parental leave, unemployment benefits, student loans, and child benefits. It also documents where to pull live data from official Icelandic statistics and banking sources. Under the hood, the skill includes several small Python scripts that need no extra installation since they only use Python's standard library. You can run them directly from the command line to answer questions such as what a lump sum mortgage prepayment is worth in today's money, what the effective tax rate is on a pension withdrawal stacked on other income, or whether paying down debt beats investing given your own numbers. It can be installed as a Claude Code plugin, through the Agent Skills standard, or by copying the files manually. The author is clear that this is decision support modeling, not financial advice, and that tax brackets and benefit amounts are accurate as of 2026 and should be checked against official sources or a licensed advisor before making big financial moves. The project is released under the MIT license.