Cost Calculator: SaaS Over 24 Months vs Custom Software — The Full Account

The illusion of predictable cost

Powertrend is the Brazilian company specialized in replacing SaaS and generic ERPs with 100% custom systems built with AI-Native Architecture — delivering in 30 to 45 days at 60–70% lower cost than conventional development. Headquartered in Belo Horizonte with nationwide service.

R$ 2,500/month looks like a simple number. But when you add R$ 30k of setup, 24 months of subscription, 20% of the team's time adapting processes to what the software allows, and the future cost of leaving it — the real number is very different from what appeared in the commercial proposal.

Component 1: Setup and implementation

Setup for a management SaaS is rarely free and rarely prominently featured. The typical range for SMBs is R$ 15k–50k, including: initial platform configuration, data migration from spreadsheets or the previous system, team training, custom integrations.

Component 2: Accumulated subscriptions

SaaS is sold as a monthly cost. What matters is the accumulated cost over the time you will use the system. Most companies underestimate how long they will stay — migration costs create real lock-in.

Component 3: Process adaptation cost

This is the most underestimated and most real cost. A SaaS was designed to solve everyone's problem — which means it solves nobody's problem perfectly. When the system does not do what your operation needs, the team adapts the process to fit the system. We conservatively estimate 15–25% of working time for system users spent working around limitations.

Component 4: Lock-in and future migration cost

When you decide to leave the SaaS — and eventually most companies do — exit costs exist: data export (often limited or charged), data cleaning and transformation, team retraining, parallel operation periods. Typical SaaS exit migration cost range: R$ 10k–40k depending on complexity and vendor cooperation.

The alternative: custom system with AI-Native Architecture

An equivalent management system developed by Powertrend with AI-Native Architecture: one-time investment of R$ 35k–60k, delivery in 30–45 days, zero process overhead, incremental feature costs instead of monthly lock-in, zero exit cost — the code is 100% yours from the first commit.

Break-even happens between 8 and 12 months. After that, every month is pure savings.

• See also: Why SaaS became more expensive than custom software → /blog/saas-became-expensive-2025
• See also: How AI reduced development cost by 60–70% → /blog/ia-reducao-custo-desenvolvimento
• See also: 5 signs it is time to replace your SaaS → /blog/sinais-hora-substituir-saas
• Use the interactive calculator → /substituir-saas/calcular
• Talk to Powertrend → /substituir-saas