The math behind the challenge
Adding 1 + 2 + … + 52 gives 52 × 53 ÷ 2 = 1,378. With a starting amount a and a weekly step d, the total is 52a + 1,326d: starting at 5 and adding 5 each week gives 6,890.
The classic version is easy at the start and hard at the end: the last four weeks cost 202, almost as much as the first 20 weeks together (210). That's where most people give up, in December, right when holiday spending peaks.
The reverse version
Start with the largest amount and go down. You pass the halfway mark in week 16 instead of week 37, and the end of the year gets easier, not harder. If your income is steady, it's usually the better choice.
Why it works (when it works)
Two findings help. People speed up as they get closer to a goal: in a study of coffee-shop reward cards, customers bought faster as they neared the free coffee (Kivetz, Urminsky and Zheng, 2006). And commitment helps: in the Philippines, clients offered a savings account that locked their money until a goal saw savings rise sharply compared with a control group (Ashraf, Karlan and Yin, 2006), even though only about half kept depositing. We found no data on how many people finish the 52-week challenge.
Read the full guide: the 52-week savings challenge.
About this planner
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Frequently asked questions
How much do you save with the 52-week challenge?
1,378 with the classic 1-to-52 version. The planner shows the total for any starting amount and step.
Can I start in the middle of the year?
Yes. Pick any start date: the chart counts 52 weeks from that day.
What if I miss a week?
Catch it up the following week, or swap it with an easier week you haven't done yet. The total is what matters, not the order.