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# 31 Day Calendar Fundraiser: How Much Money Can You Raise?
**Short answer:** A fully claimed 31-day calendar fundraiser raises **$496 per participant**. That's 1 + 2 + 3 + ... + 31 = $496.
This post breaks down where that number comes from, what realistic completion rates look like, and how groups stack participants to push total revenue into five and six figures.
## The math: why exactly $496?
A 31-day pick-a-date calendar has one date for every day of the month, with the dollar amount matching the date. Day 1 costs $1. Day 15 costs $15. Day 31 costs $31. When a participant's calendar is fully claimed, the total raised is the sum of every integer from 1 to 31.
The arithmetic series formula gives the exact answer: **n × (n + 1) / 2**, with n = 31. So 31 × 32 / 2 = **$496**. Every fully claimed calendar raises the same amount, regardless of which order dates are claimed.
## Realistic earnings per participant
Few participants fully claim every single date. Most campaigns see completion rates between 60% and 85%. Here's a quick translation:
- 100% claimed: $496 (math max)
- 85% claimed (great): ~$422
- 75% claimed (typical good): ~$372
- 60% claimed (modest): ~$298
If a participant fills the high-dollar dates (25th–31st) but skips a few low-dollar ones, their total is still close to $496 because the bulk of revenue is in the back half of the calendar.
## Earnings by participant count
| Participants | 100% claimed (max) | 75% realistic |
|---|---|---|
| 1 | $496 | $372 |
| 10 | $4,960 | $3,720 |
| 25 | $12,400 | $9,300 |
| 50 | $24,800 | $18,600 |
| 100 | $49,600 | $37,200 |
| 200 | $99,200 | $74,400 |
The format scales linearly with participants — that's its single biggest advantage. A school doesn't need 5,000 donors. It needs 50 motivated participants who each ask 10–20 people for small donations.
## How to push revenue past the standard $496
Three practical levers:
**1. Multiple calendars per participant.** Some groups run a calendar in October and another in March. Same participants, double the revenue.
**2. Multi-month calendars.** Run a 60-day calendar with prices $1–$60. Total = $1,830 per fully claimed calendar. (Most groups stick with 31 days because it's a familiar mental model for donors.)
**3. Donor bonuses.** Add a "donate $50 to claim any premium date" tier on top of the standard $1–$31. Power donors love a way to give more.
**4. Class or team challenges.** Groups with 4+ classes/teams often see a 15–30% bump from leaderboard competition.
## What it costs to actually collect that money
On CalendarFundraiser, the **platform fee is $0**. You keep 100% of donations minus PayPal's standard processing (~3.5% + $0.49 per transaction). So a $496 calendar nets the organization about $472 after PayPal fees.
There's no take-home percentage, no transaction fees on top of the subscription, and donations deposit directly to your PayPal account — no waiting on platform payouts.
## Start your 31 day calendar fundraiser
Want to see the format in action? Spin up a campaign in three minutes.
**[Start free →](/register)**
Or read [how to run a digital pick-a-date calendar fundraiser](/blog/how-to-run-digital-calendar-fundraiser) for the full launch playbook.
Earnings••5 min read
31 Day Calendar Fundraiser: How Much Money Can You Raise?
A fully claimed 31-day calendar fundraiser raises $496 per participant (1 + 2 + ... + 31 = $496). See the math, realistic earnings tables, and how to multiply revenue across teams and classes.
C
CalendarFundraiser Team
Fundraising Expert
# 31 Day Calendar Fundraiser: How Much Money Can You Raise?
**Short answer:** A fully claimed 31-day calendar fundraiser raises **$496 per participant**. That's 1 + 2 + 3 + ... + 31 = $496.
This post breaks down where that number comes from, what realistic completion rates look like, and how groups stack participants to push total revenue into five and six figures.
## The math: why exactly $496?
A 31-day pick-a-date calendar has one date for every day of the month, with the dollar amount matching the date. Day 1 costs $1. Day 15 costs $15. Day 31 costs $31. When a participant's calendar is fully claimed, the total raised is the sum of every integer from 1 to 31.
The arithmetic series formula gives the exact answer: **n × (n + 1) / 2**, with n = 31. So 31 × 32 / 2 = **$496**. Every fully claimed calendar raises the same amount, regardless of which order dates are claimed.
## Realistic earnings per participant
Few participants fully claim every single date. Most campaigns see completion rates between 60% and 85%. Here's a quick translation:
- 100% claimed: $496 (math max)
- 85% claimed (great): ~$422
- 75% claimed (typical good): ~$372
- 60% claimed (modest): ~$298
If a participant fills the high-dollar dates (25th–31st) but skips a few low-dollar ones, their total is still close to $496 because the bulk of revenue is in the back half of the calendar.
## Earnings by participant count
| Participants | 100% claimed (max) | 75% realistic |
|---|---|---|
| 1 | $496 | $372 |
| 10 | $4,960 | $3,720 |
| 25 | $12,400 | $9,300 |
| 50 | $24,800 | $18,600 |
| 100 | $49,600 | $37,200 |
| 200 | $99,200 | $74,400 |
The format scales linearly with participants — that's its single biggest advantage. A school doesn't need 5,000 donors. It needs 50 motivated participants who each ask 10–20 people for small donations.
## How to push revenue past the standard $496
Three practical levers:
**1. Multiple calendars per participant.** Some groups run a calendar in October and another in March. Same participants, double the revenue.
**2. Multi-month calendars.** Run a 60-day calendar with prices $1–$60. Total = $1,830 per fully claimed calendar. (Most groups stick with 31 days because it's a familiar mental model for donors.)
**3. Donor bonuses.** Add a "donate $50 to claim any premium date" tier on top of the standard $1–$31. Power donors love a way to give more.
**4. Class or team challenges.** Groups with 4+ classes/teams often see a 15–30% bump from leaderboard competition.
## What it costs to actually collect that money
On CalendarFundraiser, the **platform fee is $0**. You keep 100% of donations minus PayPal's standard processing (~3.5% + $0.49 per transaction). So a $496 calendar nets the organization about $472 after PayPal fees.
There's no take-home percentage, no transaction fees on top of the subscription, and donations deposit directly to your PayPal account — no waiting on platform payouts.
## Start your 31 day calendar fundraiser
Want to see the format in action? Spin up a campaign in three minutes.
**[Start free →](/register)**
Or read [how to run a digital pick-a-date calendar fundraiser](/blog/how-to-run-digital-calendar-fundraiser) for the full launch playbook.
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