Free tools for investors

Free Investment & Personal Finance Calculators

Compound interest, P/E, PEG & PEGY stock valuation, 50/30/20 budget calculator and budget template. Practical personal finance tools — no sign-up, no email required.

Currency:
Compound Interest Calculator
Simulate investment growth with configurable compounding frequency
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P/E, PEG & PEGY Calculator
Assess whether any stock is cheap or expensive with Peter Lynch's ratios
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50/30/20 Budget Calculator
Split your income into needs, wants and savings
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Monthly Budget Template

A ready-to-use template based on the 50/30/20 method. Fill in your monthly figures and track your actual spending against your plan.

Template preview
CategoryBudgetActualDifference
NEEDS (50%)
Rent / Mortgage£ ___£ ___£ ___
Groceries£ ___£ ___£ ___
Transport£ ___£ ___£ ___
Insurance£ ___£ ___£ ___
Healthcare£ ___£ ___£ ___
Utilities (water/electricity/gas/broadband)£ ___£ ___£ ___
Subtotal needs£ ___£ ___£ ___
WANTS (30%)
Restaurants / Takeaways£ ___£ ___£ ___
Entertainment / Leisure£ ___£ ___£ ___
Clothing / Footwear£ ___£ ___£ ___
Subscriptions (Netflix, Spotify, etc.)£ ___£ ___£ ___
Travel / Holidays (monthly amount)£ ___£ ___£ ___
Hobbies / Other£ ___£ ___£ ___
Subtotal wants£ ___£ ___£ ___
SAVINGS / INVESTMENTS (20%)
Emergency fund£ ___£ ___£ ___
Investments (ISA / ETFs / pension)£ ___£ ___£ ___
Extra debt repayment£ ___£ ___£ ___
Subtotal savings£ ___£ ___£ ___
MONTHLY TOTAL£ ___£ ___£ ___
Want to go deeper?

These tools are a starting point. The book is the full map.

Budgeting, debt, emergency fund, ETFs, Bitcoin — all explained practically and honestly, from scratch.

See the book →