The TCO calculator provides a simple, quick way to compare costs for on-prem versus cloud HSM estates based on your specification. Click the Compare button to calculate how many HSMs you need and the ownership costs over 3 years for each option. There are various assumptions made about your infrastructure, staff and installation costs which you can change to align with your real costs to generate an updated comparison. We look forward to helping you make an informed decision about which type of payShield solution is best for you.