How can I automate Public Improvement Fee calculations on Shopify POS for one location?

Topic summary

A merchant needs to automatically calculate a Public Improvement Fee (PIF) at one of two POS locations. The fee works as a 0.75% charge on sales that becomes part of a new subtotal, which is then subject to the standard 7.55% sales tax. For example, a $100 sale would incur a $0.75 PIF, creating a $100.75 subtotal, then $5.66 in sales tax, for a total of $106.41.

Attempted Solutions:

  • Contacted Shopify Retail Support
  • Posted a Shopify Experts job request
  • Both efforts yielded no working solution

Outcome:
The original poster absorbed the cost difference for 5 years until their lease ended and the location closed. The issue remains unresolved for others facing similar requirements.

Potential Alternative:
A third-party developer mentioned building an app (Chargly) designed for adding various fees to Shopify POS transactions, though it’s unclear if this specifically handles compounding fee-then-tax calculations.

Summarized with AI on October 31. AI used: claude-sonnet-4-5-20250929.

Hi Lgff,

Unfortunately, this was never solved and I ate the cost. Our 5 year lease ended and we closed the location. Good luck.

All the Best,

George