ControlGuarantee · we measure it

We don’t ask you to believe us. We measure it.

We split your overdue invoices at random: Zeryx handles one half and you keep handling the other. After 90 days we compare. If Zeryx doesn’t collect at least ten points more than your control group, we refund what you paid.

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(01)What it is

How does the guarantee work?

With a control group. We split your overdue invoices at random into two halves: Zeryx handles one, and you keep handling the other as you do today, with the same clients and in the same month. After 90 days we compare what share of the overdue money was collected in each half. If Zeryx doesn’t collect at least ten points more, we refund your fees. It’s included in the Mid-size plan.

  • Random split, same clients, same month
  • Comparison after 90 days
  • +10 points or your fees refunded
  • Included in the Mid-size plan
(02)How it works

How it works, step by step.

  1. Control

    We split your overdue invoices at random. Zeryx handles one half; you keep handling the other.

  2. Scoreboard

    After 90 days we compare the money collected in each half, how much came in through the link and the days to payment.

  3. Guarantee

    If Zeryx doesn’t collect at least ten points more than your control group, we refund what you paid. No arguments.

(03)What’s included

Everything you need, nothing to set up.

Control group

The only honest way to know if Zeryx collects more: compare it with what you would have collected yourself.

Your own scoreboard

After 90 days you have your number: collection points over your control group.

Refund

If it doesn’t reach +10 points in three months, we refund your fees.

Public scoreboard

With data from the first companies, we’ll publish the result in December 2026, whatever it turns out to be.

What we measure

A number, not an opinion.

  • Money collected
  • Money paid through the link
  • Days to payment
  • Invoices measured
(04)Who it’s for

Built for companies that invoice and collect every day.

Companies with a finance and admin team

Who already chase payments and want to know if Zeryx does it better.

Anyone who needs numbers to decide

And would rather measure it than take it on faith.

(05)Questions

Questions about Guarantee

With the Mid-size plan, you measure it yourself: Zeryx handles half of your overdue invoices and you handle the other half. After three months we compare. If we don’t collect at least ten points more than your control group, we refund your fees.

At random, so both halves have the same clients and the same kind of invoices in the same month.

In December 2026, with data from the first companies. Until then, we’re not sharing any figures.

Keep exploring

Stop chasing invoices.

We're starting with a few companies in Spain. If you have genuinely overdue invoices, message us on WhatsApp and we'll tell you how to get in. A real person will reply.