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FranchiseVerdict

Duff’s CakeMix vs Planet Smoothie

Franchise Comparison 2026

Both Duff’s CakeMix and Planet Smoothie are quick-service restaurants franchises. Duff’s CakeMix requires an investment of $272K – $415K while Planet Smoothie requires $206K – $479K. Planet Smoothie discloses average revenue of $280K; Duff’s CakeMix does not report Item 19 data. Planet Smoothie has SBA lending data on file with a 27.2% charge-off rate. FranchiseVerdict rates Duff’s CakeMix D (Below average) and Planet Smoothie C (Average).

Investment Range
$272K – $415K
$206K – $479K
Franchise Fee
$45K
$25K
Royalty Rate
6.0%
5.0%
Average Revenue (Item 19)
N/An=2
$280K
SBA Charge-Off Rate
N/A
27.2% (120 loans)
Total Units
2
154
Unit Growth (YoY)
N/A
N/A
Year Began Franchising
2022
2012
FDD Year
2023
2025