SAP ECC Maintenance End 2027: What It Means for Your Company

The Key Facts at a Glance

• Many companies run their day-to-day business on SAP ECC (also known by its older name, SAP R/3). Regular maintenance for these systems ends on 31 December 2027.
• After that, extended maintenance is available until the end of 2030 for an additional fee. Companies that don't take it up will no longer receive security updates or statutory/legal updates.
• The system won't shut itself down afterwards, but secure and legally compliant operation becomes a risk, with growing responsibility resting on management.
• The successor is called SAP S/4HANA, offered to mid-sized companies in a cloud model as SAP Cloud ERP.
• SAP is currently encouraging the move to the cloud with migration incentives, such as credits that can be applied to licences or services. These terms are time-limited and depend on when you decide. We'll clarify which benefits currently apply to you together in an initial conversation.
• A switch typically takes 12 to 24 months.

Many mid-sized companies run their day-to-day business on the SAP ECC ERP system. Accounting, purchasing, warehousing, production, and sales all come together there. And it's precisely this system for which SAP has set an expiry date: regular maintenance ends at the end of 2027.

This article explains what the maintenance end means, what options you have, and what really matters when it comes to switching.

What Exactly Does "Maintenance End" Mean?

Maintenance means: SAP looks after your system. It delivers security updates against new threats and adapts the software whenever laws change, for example in tax law. When maintenance ends, that stops.

Your system will keep running technically from 1 January 2028 – nobody switches anything off. But it will no longer receive new security patches or statutory adjustments. For software that holds your financial, production, and customer data, that becomes a real risk over time.

When Exactly Does Maintenance for SAP ECC End?

Regular maintenance (SAP calls it "mainstream maintenance") for SAP ECC ends on 31 December 2027. This applies to the versions most widely used today. Older versions already fell out of regular maintenance at the end of 2025.

If switching by the end of 2027 isn't achievable for you, you can benefit from a one-off buffer: SAP offers extended maintenance until the end of 2030, though at a surcharge of two percentage points on the regular annual maintenance fee. After that, only limited support is available, with no new updates.

What Does This Mean Concretely for Your Company?

If you stay on the old system, three problems grow with every year:

• Security: New vulnerabilities are no longer patched. The risk of data loss and attacks increases.
• Legal compliance: New tax or statutory requirements are no longer applied automatically. Your team has to safeguard compliance manually to an increasing degree – a growing burden, particularly for finance and controlling, and a liability issue for those responsible.
• Cost and availability: Support for legacy systems becomes more expensive, and the specialists for it become scarcer.

There's also a timing factor: according to the DSAG Investment Report 2026, around half of all companies still have the switch to S/4HANA ahead of them, 37 percent are planning it by the end of 2027, and some are stretching it out to 2030 or later due to capacity and budget constraints. The closer the deadline gets, the fuller consulting firms' order books become – and the scarcer the available slots.

In short: the maintenance end is no reason to panic, but it is a good reason to act now.

What Options Do You Have Now?

There are essentially three paths:

1. Switch to SAP Cloud ERP. The path SAP has designated as the successor, and for most companies the most sustainable solution. The switch is also an opportunity to clear out workarounds that have grown over the years and to simplify processes. SAP is currently supporting the move to the cloud with migration incentives. We'll clarify together in an initial conversation which benefits currently apply to you.
2. Use extended maintenance as a bridge. Sensible if you've started the switch but won't finish by the end of 2027. It buys time until 2030 but doesn't solve the underlying issue.
3. Wait it out. The most expensive option. It pushes the problem into a phase when appointments are scarce and the risks are greatest.

For the vast majority of mid-sized companies, the question is therefore not whether to switch, but when and how.

What Is SAP S/4HANA, and What Is „SAP Cloud ERP“?

SAP S/4HANA is the new generation of the same business software many companies know today as ECC. It's more modern, faster, and built for real-time analytics. For production, that means, for example: material flows and key figures are visible at a glance at all times, without paper-based workarounds or disconnected point solutions.

S/4HANA comes in several variants. For small and mid-sized companies, SAP offers it as a ready-made cloud package (SAP Cloud ERP). The advantage: the system is built on proven best-practice standard processes, so it's ready to go faster and keeps costs predictable. Companies that need more scope for custom solutions can choose a more flexible variant. Which one suits you is a separate question we're happy to discuss with you personally.

How Does the Switch Work?

For companies currently using ECC or R/3, there are essentially two directions:

1. The path to the Private Cloud. This essentially transfers your existing, individually customized system to the cloud, including many custom processes that have grown over time. This path is demanding: it's preceded by a paid technical assessment (the so-called Readiness Check) carried out by an SAP consulting firm, and the actual migration can take years. This is not the path PART recommends.
2. The path to the Public Cloud – our approach. Instead of laboriously carrying old processes forward, we align your workflows with the proven standard processes of SAP Cloud ERP. This has three advantages: no paid Readiness Check is needed, so no costs arise during the selection phase; your data is transferred once via import; and the launch is considerably faster. The prerequisite is a willingness to rely on proven standard processes rather than maximum customization.

For us, the starting point is never a standard offer but the Digital Discovery Assessment (DDA): a structured process in which we jointly clarify requirements, scope, and a realistic roadmap, with fixed points of contact instead of rotating teams.

How Fast is This?

The often-cited long timeframes of 12 to 24 months or more relate to the individual path to the Private Cloud. The standardized path to the Public Cloud is considerably faster: with the PART GROW Basic (Finance) package, launch can be achieved in around three months. Larger scopes take correspondingly longer, but remain predictable.

The most important lever is therefore not the technology, but the timing of the decision. The earlier the course is set, the calmer, more predictable, and more cost-effective the switch – and the sooner you secure the current terms.

How Does PART Support the Switch?

PART has supported mid-sized companies in the process industry with SAP projects for over 30 years. This sector has particular requirements for such a system, from batch traceability and recipe management through to hazardous substance and quality management. PART knows these requirements not from theory, but from hands-on project experience with companies such as Kluthe, Gremmler, and Dr. Sthamer.

The starting point is never a standard offer, but a structured initial conversation in which we jointly clarify your requirements, the right path, and a realistic timeline, with fixed points of contact instead of rotating teams. That's how the abstract 2027 deadline becomes a concrete, plannable roadmap. In short: complexity out, clarity in.

Want to know what a switch would look like for your company specifically? Contact us for a non-obligatory consultation.

Frequently Asked Questions About the SAP Maintenance End 2027

When exactly does maintenance for SAP ECC end?
Regular maintenance for SAP ECC and the older SAP R/3 version ends on 31 December 2027. Older versions already fell out of maintenance at the end of 2025. Extended maintenance is available for an additional fee until the end of 2030.

Do I really have to switch?
Not by a hard deadline, but practically speaking, yes: without switching, you'll no longer receive security updates or statutory updates. S/4HANA is the successor designated by SAP and is secured until at least 2040.

What happens if I do nothing?
Your system will keep running technically, but it will lose secure and legally compliant operation. This increases security and compliance risks and makes later projects more expensive.

How quickly can I get started?
With a standard package such as PART GROW Basic (Finance), a launch is possible in around three months. The multi-year timeframes relate to the individual path to the Private Cloud.

What's the difference between S/4HANA and SAP Cloud ERP?
They aren't two different products. S/4HANA is the software – the new ERP generation from SAP. SAP Cloud ERP is a particular way of using it: fully set up from the cloud, operated and automatically kept up to date by SAP.