If you would like to change the plan that you're currently on, go to Subscription & Billing → Modify subscription and select the desired plan.
Q: What happens if I switch from the Business to the Small Office plan mid-subscription?
A: You'll be credited the difference into your Paymo account, which can be used in future upgrades/charges.
Q: What should I do if I want to switch from an annual to a monthly subscription?
A: Cancel your annual subscription first, then start the subscription process over.