Is MaidCentral PCI Compliant?

Yes.

All credit card processing is handled by Stripe or Authorize.net and Maid Central does not store any credit card information. Both platforms are PCI compliant.

If you would like to know more on the systems in place, please reach out to your Credit Card Processor directly. 

Stripe - https://stripe.com/guides/pci-compliance

Authorize.net - https://www.authorize.net/en-us/resources/blog/2021/pci-dss-compliance.html