Most comparisons of savings challenges lead with the total: £667.95 for the 1p challenge, £1,378 for the 52-week challenge, £5,050 for the 100 envelope challenge. The total is the reward, but it is not what decides whether you finish. What matters is what each challenge costs in a normal month, how bad the worst stretch gets and how often you have to remember to do it.
This guide compares the popular challenges on those terms, then gives a short chooser so you can pick one in a couple of minutes. If you want the full list with descriptions of each, see our roundup of 15 savings challenges to try.
Challenges with a fixed total
These challenges follow a set schedule, so you know the finish line before you start. Every figure below is worked out from the challenge rules; the 1p and 2p hardest months use the 2027 calendar, and the 52-week figures assume weekly saves.
| Challenge | Total | Length | Average a month | Hardest stretch | Saves a week | Difficulty |
|---|---|---|---|---|---|---|
| 1p challenge | £667.95 | 365 days | £55.66 | December 2027: £108.50 | 7, or 1 if batched | Easy |
| £1 a day | £365 | 365 days | £30.42 | None: the same every day | 7, or 1 if batched | Easy |
| 26-week | £351 | 26 weeks | £58.50 | Last 4 weeks: £98 | 1 | Easy |
| Mini envelope (30, in pairs) | £465 | 15 weeks | £134.33 | None: £31 every week | 1 | Easy |
| 52-week | £1,378 | 52 weeks | £114.83 | Last 4 weeks: £202 | 1 | Medium |
| Reverse 52-week | £1,378 | 52 weeks | £114.83 | First 4 weeks: £202 | 1 | Medium |
| Lite envelope (50, one a week) | £1,275 | 50 weeks | £110.50 | A £50 draw in a bad week | 1 | Medium |
| 2p challenge | £1,335.90 | 365 days | £111.33 | December 2027: £217 | 7, or 1 if batched | Medium |
| 100 envelope (classic) | £5,050 | 100 days | About £1,515 per 30 days | Any £90 to £100 day | 7 | Hard |
"Saves a week" is how many separate actions it takes. A daily challenge can be batched into one weekly or monthly transfer, which makes it far easier to keep up.
Challenges without a fixed total
These depend on your habits, so the totals below are examples, not predictions. They suit people who want saving to fit around their life rather than follow a schedule.
| Challenge | How it works | Example total | Effort | Difficulty |
|---|---|---|---|---|
| Round-up | Card payments are rounded up to the next pound and the change is saved | £365 a year if round-ups average £1 a day | Automatic once set up | Easy |
| £5 note | Every £5 note you get in change goes in a jar | £260 a year at one note a week | Only works if you use cash | Easy |
| Payday percentage | Save a fixed share of every payment you receive | £1,200 a year at 5% of £2,000 a month | One transfer a payday | Easy to medium |
| No-spend month | Cut all non-essential spending for a month | Whatever you would have spent | Daily decisions | Hard socially |
| No-buy or low-buy | Stop buying things in chosen categories for a set time | Whatever you would have spent | Planning up front | Medium |
Why the hardest stretch matters more than the total
Look at the 52-week challenge. It averages £114.83 a month, which sounds manageable. But the first four weeks cost £10 in total and the last four cost £202, and those last four weeks usually fall in December. That makes the end of the year the easiest point to drop it, because the amounts are at their biggest just as Christmas competes for the same money.
The 1p challenge has the same shape on a smaller scale: January 2027 costs £4.96 and December £108.50. The 100 envelope challenge is hard the whole way through if you draw at random, because any day can be a £90 to £100 day.
If you know when your tight months are, choose a challenge whose hardest stretch avoids them. The reverse 52-week puts the £202 stretch in January instead, and the paired envelope versions cost the same every week.
Who each challenge suits
- 1p challenge: beginners, children learning about money and anyone on a tight budget who wants a daily habit.
- £1 a day: people who like a flat, predictable amount and do not want the numbers to grow.
- 26-week: a trial run before committing to a full year, or a half-year goal such as a summer holiday.
- 52-week and reverse 52-week: people paid weekly or fortnightly with roughly £25 to £30 a week spare on average.
- Envelope versions: people who enjoy a bit of chance. The Mini and Lite sizes suit most budgets; the classic suits a high income and a short, specific goal.
- 2p challenge: people who finished the 1p challenge and want to double it.
- Round-up and £5 note: people who would rather not think about it, as long as they accept the total will vary.
- Payday percentage: anyone with irregular income, or anyone who wants saving to grow with a pay rise.
- No-spend and no-buy: people whose main problem is impulse spending rather than a lack of savings habit.
Quick chooser: if this, then that
- If you have never stuck to a savings habit: start with the 1p challenge or the 26-week challenge. Small amounts, quick wins.
- If you can spare about £25 to £30 a week: the 52-week challenge or the Lite envelope version, both around £1,300 a year.
- If December is always tight: the reverse 52-week challenge, or the reverse 1p challenge, so the big amounts come in January.
- If you want the same amount every time: a paired envelope challenge, £1 a day or a payday percentage. See the tight-budget envelope versions.
- If you need a large sum quickly and have a high income: the classic 100 envelope challenge, but check you can find about £1,500 a month first.
- If you forget things: round-ups or a payday percentage set up as a standing order. Once running, they need no daily effort.
- If your pay changes from month to month: a payday percentage with a small minimum, so a lean month still counts.
- If your spending is the problem, not your saving: a no-spend month or a no-buy challenge, with what you do not spend moved into savings.
Combining two challenges
A small daily challenge alongside a weekly one works well. The 1p challenge plus the 52-week challenge saves £667.95 + £1,378 = £2,045.95 in a year. Running one of them in reverse spreads the load: the reverse 52-week is heaviest in January and the standard 1p is heaviest in December, so their big months do not overlap.
Do not combine two hard challenges. If the first one starts to slip, drop the second rather than letting both fail. A finished £351 challenge does more for your confidence than an abandoned £1,378 one.
Check it fits before you start
Take the average monthly figure from the table, then check it against your budget after bills and any money you set aside for annual costs. Our budget planner shows what you have left. The 52-week challenge calculator and 1p challenge calculator work out the schedule for any start date, including reverse versions.
Once you have picked one, the hard part is remembering. SYM, our app, has the popular challenges built in, shows what to save today and keeps a streak going, which helps more than a big target on its own.
Frequently asked questions
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