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How Kertos Took Back Control of Complex, Multi-Year Billing

Kertos replaced manual invoicing with one platform for contracts, billing and revenue reporting, giving finance full control as the business scales.

One source of truth

Billing, dunning and KPI reporting combined

Contracts in control

Contract terms tracked year by year

Audit-ready billing

Clean trail from contract to cash

About Kertos

Kertos is a European compliance platform that gets companies certified and keeps them continuously compliant across the frameworks and regulations that matter in Europe, including ISO 27001, ISO 42001, GDPR, NIS2, the EU AI Act, SOC 2, TISAX, and C5. It pairs agentic automation with certified experts who work alongside each customer through preparation, the audit, and every cycle that follows.

As Kertos grew, it wanted its own finance operations to be just as audit-ready.

The challenge

Before Younium, Kertos ran invoicing through a general-purpose invoicing tool. As the customer base grew and contracts became more complex, automating invoicing became increasingly difficult.

Key pain points included:

  • Invoicing that was hard to automate at scale
  • Information about open invoices, billing cycles and contract terms spread across tools
  • Multi-year contracts with staged terms were difficult and time-consuming to manage manually
  • No single place to control customers and invoices
Katjana Kammin, Head of Finance

"Manual processes created overhead that grew with our customer base. We outgrew a general-purpose tool and it was difficult keeping track of open invoices, billing cycles and contract terms, especially for multi-year contracts. We needed dedicated tooling to keep billing reliable and auditable at scale."

– Katjana Kammin, Head of Finance, Kertos

Why Younium

Kertos needed more than an invoicing tool. It needed a platform that could reflect how its contracts actually work. Three factors made the difference.

1. Built for complex contract structures

Kertos bills across several frameworks and contract setups. Younium's account and order dimensions matched that structure, giving the team a clear overview of contract terms across several billing cycles.

2. Everything in one place

Contract terms, invoicing and metric reporting now live on one platform. Finance has a single source of truth instead of piecing information together from different tools.

3. A European provider

For a company whose business is European compliance, working with a European vendor was a natural requirement.

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The results

With Younium in place, Kertos replaced manual coordination with a dedicated billing foundation that gives finance a clear view of every customer and contract.

Simpler, faster invoicing

Invoicing no longer depends on manual effort for every contract. The platform handles billing cycles and multi-year agreements, so the team can invoice faster and with more confidence.

A full overview of customers, invoices and payments

Open invoices, payment status and contract terms sit in one place. The team no longer has to chase information across tools to see where each account stands.

"Today we have a full overview of customers, invoices and payments in one place. Invoicing is simpler and faster, and our reporting comes straight from Younium."

– Katjana Kammin, Head of Finance, Kertos 

A cleaner audit trail and smoother month-end

 With less manual coordination, Kertos has a cleaner audit trail. Finance can give its accountants better guidance for month-end close.

Reporting that supports growth

SaaS metrics such as MRR and ARR come directly from Younium, giving finance the oversight it needs as the business grows.

 

Looking ahead

For Kasey Le, Customer Success Manager at Younium, Kertos’s trust in Younium is what makes the partnership work.

“Katjana and the Kertos team are a pleasure to work with: engaged, curious and always looking for smart solutions together.”

Next, Kertos is evaluating Younium’s quoting module and HubSpot integration to set up accounts and contracts automatically. The goal: quoting and invoicing on one platform.

Set up dedicated billing infrastructure early. Retrofitting later takes far more time: the more customers you have, the more manual work it takes to catch up. Use one tool for all invoicing. It reduces errors, improves visibility and keeps finance in control.

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