# The Money Shelf > 22 claims from 102 popular money books, checked against United States, United Kingdom and Australian records. A book by Kenneth McDonald (ebook and paperback, 2026). The Money Shelf takes 22 claims that recur across 102 popular money books, from compound interest and the latte factor to index funds, Bitcoin, gold, day trading and the 4 per cent rule, and sets each one against the official records of the United States, the United Kingdom and Australia. Every figure in the book is dated and sourced to a statistics office, central bank, tax authority, regulator or published study. General information only, not personal financial advice. Verdicts: 2 Holds; 4 Weak diagnosis; 8 Holds with conditions; 7 Not established; 1 Does not hold. ISBN 978-1-0483-6059-2 (ebook). ISBN 978-1-0483-6060-8 (paperback, 188 pages, 6 x 9 inches). ## The 22 claims and their verdicts - [1. Compound interest: start early](https://themoneyshelf.com/claims/1): Does starting ten years earlier change the outcome as much as the books say? Verdict: Holds. - [2. Small spending: cut the daily coffee](https://themoneyshelf.com/claims/2): Is the daily coffee where the money goes? Verdict: Weak diagnosis. - [3. Pay yourself first: save before you spend](https://themoneyshelf.com/claims/3): Does saving automatically make people save more? Verdict: Holds with conditions. - [4. Index funds: own the index](https://themoneyshelf.com/claims/4): Do professional fund managers beat a fund that copies the market? Verdict: Holds. - [5. Debt snowball: pay off the smallest debt first](https://themoneyshelf.com/claims/5): Is paying the smallest debt first worth what it costs? Verdict: Holds with conditions. - [6. Emergency fund: keep three to six months of expenses in cash](https://themoneyshelf.com/claims/6): How much cash should a household keep for a shock? Verdict: Holds with conditions. - [7. Assets or salary: wealth comes from owning assets](https://themoneyshelf.com/claims/7): Does wealth come from what you own or from what you earn? Verdict: Weak diagnosis. - [8. Side hustle: start a side business](https://themoneyshelf.com/claims/8): Is a side business a reliable route to wealth? Verdict: Not established. - [9. Frugality: spending less beats earning more](https://themoneyshelf.com/claims/9): Can spending less do more than earning more? Verdict: Weak diagnosis. - [10. Mindset: belief creates wealth](https://themoneyshelf.com/claims/10): Can believing in wealth produce it? Verdict: Not established. - [11. Housing costs: fixed costs decide what a household can save](https://themoneyshelf.com/claims/11): Do fixed costs decide how much a household can save? Verdict: Holds with conditions. - [12. Stock picking: you can pick winning stocks](https://themoneyshelf.com/claims/12): Can an ordinary investor pick the shares that win? Verdict: Not established. - [13. Market timing: time the market and cut losses early](https://themoneyshelf.com/claims/13): Can anyone choose the right moment to buy and sell? Verdict: Not established. - [14. Bitcoin: a hedge against inflation](https://themoneyshelf.com/claims/14): Does Bitcoin protect savings against inflation? Verdict: Not established. - [15. Gold: protection in a crash](https://themoneyshelf.com/claims/15): Does gold protect wealth when markets crash? Verdict: Not established. - [16. Rent or buy: buying a home builds more wealth than renting](https://themoneyshelf.com/claims/16): Does buying a home build more wealth than renting? Verdict: Not established. - [17. Die with zero: spend it down on purpose](https://themoneyshelf.com/claims/17): Should savings be spent down on purpose before death? Verdict: Holds with conditions. - [18. Day trading: you can make a living from it](https://themoneyshelf.com/claims/18): Can trading every day become a living? Verdict: Does not hold. - [19. Retirement savings: work out your number and time your state pension](https://themoneyshelf.com/claims/19): Can a retirement be priced as one number? Verdict: Holds with conditions. - [20. The 4 per cent rule: withdraw about 4 per cent a year in retirement](https://themoneyshelf.com/claims/20): Is the 4 per cent rule still safe? Verdict: Holds with conditions. - [21. 401(k), ISA and super: use the tax-advantaged accounts first](https://themoneyshelf.com/claims/21): Should the tax-advantaged account come first? Verdict: Holds with conditions. - [22. Inflation and cash: currencies are losing value, so cash savings are being destroyed](https://themoneyshelf.com/claims/22): Is inflation destroying cash savings? Verdict: Weak diagnosis. ## Official tools by country - [United States](https://themoneyshelf.com/countries/us): official calculators and sources for each claim - [United Kingdom](https://themoneyshelf.com/countries/uk): official calculators and sources for each claim - [Australia](https://themoneyshelf.com/countries/au): official calculators and sources for each claim ## The book - [About the book](https://themoneyshelf.com/about) - [Buy the ebook or paperback](https://themoneyshelf.com/buy): Amazon, Kobo and Gumroad - [Journal](https://themoneyshelf.com/journal/): articles that extend the book ## Contact - Author: Kenneth McDonald, kenneth@themoneyshelf.com