Signs the numbers support it
A flat license spreads a fixed cost across your client base. The more clients you serve through the software, the lighter that cost becomes per client. Firms with a substantial and growing book of monthly bookkeeping clients usually find the economics comfortable, while firms with a handful of clients may not.
Growth plans matter as much as current numbers. If you intend to add clients steadily over the coming years, a license that does not rise with each client or staff member supports that plan. The HelloBooks license includes unlimited firm staff, which also helps as your team expands.