The
100 envelope challenge involves numbering 100 envelopes from £1 to £100, pulling a random envelope regularly, and saving that amount. The total:
£5,050.
Tracker design: A 10x10 grid numbered 1-100. When you pull an envelope number, cross off that number on the grid. This tracker serves double duty — it shows your progress AND helps you identify which amounts you haven't yet saved.
Physical vs digital hybrid: While the original challenge uses physical envelopes, many people prefer to pull a random number using SYM or a random number generator, then save that amount digitally. The printable tracker still serves as the visual progress display.
Pacing your tracker: The original challenge suggests pulling 2-3 envelopes per week, completing the challenge in 7-12 months. Your tracker should reflect your chosen pace. Some people mark target dates for milestones (25%, 50%, 75% complete) to maintain motivation during the middle stretch.
Budget-friendly variations: For tighter budgets, divide all amounts by 2 (saving 50p to £50, total £2,525) or by 5 (20p to £20, total £1,010). Your tracker works the same — just adjust the legend to show your modified amounts.