Mariusz Invest Follow on X

Investing in the UK. With receipts.

A Polish investor in the UK, building wealth through ISAs, dividends and a lot of screenshots. The wins, the losses and the UK tax rules that make the difference.

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ISA · JISA · SIPP

UK Money Calculator

How long until you're an ISA millionaire, what a Junior ISA is worth at 18, and what pension tax relief adds up to.

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Fair Price Calculator

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My receipt · October 2026

Stocks ISA£340,558
Realised profit£223,318
Dividends to date£4,229
Daughter's Junior ISA£17,023
Started from £0. Not every trade wins.

Platforms I actually use

Trading 212Where my ISA and income pie live. Free share for new accounts.
Link soon
Robinhood UKFree share when you sign up. Mine all go into $AMZN.
Referral

Coming soon

From £0 to a £340k ISAThe e-book. Every decision, every mistake, with screenshots.
Soon