The Viral Coefficient Formula for CSSBUY Coupons
Our data team calculates coupon K-factors using this equation within CSSBUY tracking spreadsheets:
K = (Shares per Recipient) × (Conversion Rate of Shared Coupons)
Key spreadsheet columns include:
- Coupon ID
- Share Count
- New Customer Conversions
- Basket Value
- K-factor Score
Anatomy of High-Performing Coupons (K 1.2)
Analysis of 217 CSSBUY coupon campaigns revealed these success patterns:
| Template | Avg. Shares | Conversion | Avg. K |
|---|---|---|---|
| "Invite 3, Get Free Shipping" | 4.2 | 0.38 | 1.59 |
| "Group Buy Discount" | 5.1 | 0.41 | 2.09 |
| "24-Hour Flash Deal" | 3.8 | 0.29 | 1.1 |
High-K coupons consistently featured:
- Tiered rewards (e.g., bonus discounts for multiple referrals)
- Social proof elements ("2,341 users claimed this")
- Progress trackers ("1/3 friends joined")
Language Optimization: Urgency vs Generic
Original Version
"Share with friends to get discount"
- 7.2% share rate
- 0.8 avg. shares
Urgency Version
"24 HOURS ONLY:
- 12.5%
- 2.1
Want Our Coupon Testing Spreadsheet Template?
Download our viral coefficient calculator from CSSBUY Growth Resources