Accounting Firm Practice Management Software Cost in Berlin (2026)

The verdict in three sentences

For a Berlin accounting practice, a vertical SaaS (25-60 EUR/user/month) wins on fast rollout, but a custom-built platform (45,000-95,000 EUR) pays off as soon as a client portal and document management become commercial differentiators. The real trade-off is not the entry price but the exit cost and the 2 to 4 hours per week recovered per staff member. Below 8 staff the SaaS is usually right; above that, custom justifies itself over three years.

Vertical SaaS or custom: the real cost

Per-user SaaS billing feels painless but compounds. Custom demands a heavier upfront investment, then amortises over a predictable maintenance fee. Here are 2026 orders of magnitude for a 12-user Berlin firm.

The hidden SaaS line item is lock-in: limited export, billed data recovery, pricing that climbs at each renewal. Custom flips the logic: you pay to own.

Three-year comparison (12 staff)

Over three years the SaaS stays cheaper in pure cash. But this table ignores two effects: the SaaS annual price rise (often 5-10%/year) and the value created by a custom client portal that differentiates the firm and cuts document back-and-forth. That is where the decision is made.

Mini case study

Mathilde, partner at a 12-person accounting firm in central Berlin, loses too many hours chasing clients for missing documents. She invests 70,000 EUR in custom software with a client portal + DMS (12,000 EUR) plus 1,500 EUR/month maintenance. Each staff member recovers 3 hours a week thanks to automated document collection. At a loaded cost of 45 EUR/hour, that is 12 × 3 × 45 × 45 weeks = 72,900 EUR/year of recovered capacity. The build pays back in a little over a year, before counting the commercial upside of a portal that helps her sell better-margined advisory work.

FAQ

Is a SaaS enough for a small firm?

Yes, below 8 staff a SaaS at 25-45 EUR/user/month covers the essentials for 2,400 to 5,400 EUR/year. Custom is justified mainly when the client portal becomes a sales argument.

What does the client portal + DMS module cost?

Budget 8,000 to 18,000 EUR depending on automation (reminders, document OCR, e-signature). It is the line item that generates the most measurable time savings.

How long for custom software?

Between 12 and 20 weeks for a standard practice scope. A clear requirements spec shortens this and avoids 20-30% quote drift.

What maintenance budget should I plan?

Maintenance of 900 to 2,500 EUR/month depending on criticality and volume of changes. Without maintenance, business software degrades within 18-24 months.

Is custom worth it over 3 years?

In pure cash the SaaS is often cheaper. But once you value the hours saved (2-4 h/staff/week) and the absence of lock-in, custom pulls ahead at around 10-12 staff.

Let's scope your project. Tell us about your firm (headcount, current tools, client portal needs) and we will cost out the most profitable SaaS-vs-custom scenario, indicative budget 45,000-95,000 EUR by scope. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.