Does this change what I bill clients?

No. The calculator estimates the cost of your time spent on manual invoice entry. The value ZeroPaste frees up goes back into margin or capacity.

How does the calculator choose a ZeroPaste tier?

It recommends Solo below 200 invoices per month, Firm from 200 to 800, and Studio above 800.

Yes. The share button copies a URL with the current invoice volume, time, and hourly rate encoded as query parameters.

ROI calculator

Use your own invoice volume and hourly rate to estimate the real annual cost of copy-paste bookkeeping work.

Annual cost of manual entry

€12,000/year

You're spending 20.0 hours/month on invoice entry. ZeroPaste costs €29/month. That's a 33.5x return.

Hours per month

20.0

Monthly manual cost

€1,000

ZeroPaste cost

€29/mo

Annual savings

€11,652

Based on your volume, the Solo plan (€29/month) would give you the best ROI.

Invoices processed per month

How many invoices still move through manual entry now?

150

Minutes spent per invoice manually

Reading, typing, checking, then filing.

Your hourly rate (€)

The value of your time doing invoice entry.

Popular guides

If you want to pair the calculator with a real workflow change, these guides explain the invoice-processing steps behind the savings.

If you are comparing adjacent workflows, these are usually the next useful pages to open.

These pages help when you want to compare ZeroPaste directly with alternatives or with the manual process.

If you would rather see the output immediately, start with the small upload test.

If you want to check the free usage, the limit, or the next step, this is the right page.