How much is the 100 envelope challenge?

$5,050 in 1.9 years: 100 deposits climbing from $1 to $100. Held in cash that is 51 bills.

How much cash is $5,050 in bills?

51 bills: 50 × $100, 1 × $50. A chart gives you the total; this is what you would actually be holding.

Which deposit is the hard one?

The last 13 deposits ask for $1,222 between them, against $91 for the first 13. That is where people stop, because the plan gets more expensive exactly as it gets less novel.

100 envelope challenge

Number a hundred envelopes $1 to $100, draw one at random, and put that much in it.

100 envelope challenge saves $5,050 across 100 deposits, one a week. They run $1 up to $100, averaging $50.50, and the whole thing takes 1.9 years.

Total: $5,050
Deposits run: $1–$100
Deposits: 100
Takes: 1.9 years

$5,050 is 51 bills

If you are doing this in cash rather than in an account, this is what you finish holding.

$100 bills: 50
$50 bills: 1

Every deposit

#1$1
#2$2
#3$3
#4$4
#5$5
#6$6
#7$7
#8$8
#9$9
#10$10
#11$11
#12$12
#13$13
#14$14
#15$15
#16$16
#17$17
#18$18
#19$19
#20$20
#21$21
#22$22
#23$23
#24$24
#25$25
#26$26
#27$27
#28$28
#29$29
#30$30
#31$31
#32$32
#33$33
#34$34
#35$35
#36$36
#37$37
#38$38
#39$39
#40$40
#41$41
#42$42
#43$43
#44$44
#45$45
#46$46
#47$47
#48$48
#49$49
#50$50
#51$51
#52$52
#53$53
#54$54
#55$55
#56$56
#57$57
#58$58
#59$59
#60$60
#61$61
#62$62
#63$63
#64$64
#65$65
#66$66
#67$67
#68$68
#69$69
#70$70
#71$71
#72$72
#73$73
#74$74
#75$75
#76$76
#77$77
#78$78
#79$79
#80$80
#81$81
#82$82
#83$83
#84$84
#85$85
#86$86
#87$87
#88$88
#89$89
#90$90
#91$91
#92$92
#93$93
#94$94
#95$95
#96$96
#97$97
#98$98
#99$99
#100$100

Want to tick them off as you go? The tracker keeps the checkmarks.

What people ask

How much is the 100 envelope challenge?: $5,050 in 1.9 years: 100 deposits climbing from $1 to $100. Held in cash that is 51 bills.
How much cash is $5,050 in bills?: 51 bills: 50 × $100, 1 × $50. A chart gives you the total; this is what you would actually be holding.
Which deposit is the hard one?: The last 13 deposits ask for $1,222 between them, against $91 for the first 13. That is where people stop, because the plan gets more expensive exactly as it gets less novel.

Other challenges, with their real numbers

A challenge is easy. Twelve months of them is the hard part.

Larder keeps the envelope going after the novelty wears off, on the same paycheck the deposits come out of.

Get Larder on the App Store

All amounts are computed in integer cents and rounded up when splitting a bill across paychecks, so a plan never funds a bill short. Pay-period counts follow the calendar: 52 weekly, 26 biweekly, 24 semi-monthly, 12 monthly. Every figure on this page is computed from the challenge itself, not typed in. Built by Larder, makers of an envelope budgeting app for iPhone. Last reviewed August 22, 2026.