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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.

Mariusz Invest Weekly

Free every Sunday. The week in markets, the stocks I'm watching and the analysis behind them.

Free. Unsubscribe any time. Or read it on Substack.

Free tools

ANY GOAL

Compound interest

See what any amount grows into, after inflation.

Open → ISA

ISA millionaire

How many years until your ISA hits £1m.

Open → JUNIOR ISA

Junior ISA at 18

What your child's pot is worth at 18.

Open → PENSION

SIPP tax relief

Pay £80, get £100. See what it adds up to.

Open → LTD DIRECTORS

Director SIPP

What more company contributions do by 57.

Open → P/S · P/E · EV/EBITDA

Fair Price Calculator

Pick a stock, set growth and an exit multiple, see the price range and yearly return.

Open →

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
eToroI trade here too. Thousands of assets and good tools.
Referral

Coming soon

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