How quickly does AI bookkeeping software pay for itself?

For most bookkeepers running 10+ monthly clients, payback is under one quarter on a tool like Keeper at $8/client/month.

What's the biggest ROI mistake?

Buying tools without baselining hours per close first. Without a baseline, you can't tell whether the tool actually saved time.

Before you buy, run the math. Here's the worksheet most firms skip.

Baseline first

Spend two close cycles tracking hours per client before you adopt a new tool. Without a baseline you're flying blind on ROI.

Monthly net savings per client:

(H × S × R) − C

Total monthly net savings: multiply by N.

Per client: (4 × 0.30 × $80) − $8 = $96 − $8 = $88/month Total: $88 × 12 = $1,056/month net.

Annualized: ~$12,700 — or one extra mid-size client of capacity.

Fewer than ~5 monthly clients. Fixed setup time dominates.
You don't have a real baseline. You won't be able to tell if the tool is working.
You skip the workflow change. The tool's ROI lives in changing how you work, not just installing it.