How Long Does It Take to Build Custom Software?
Custom software can take a few weeks or more than a year. Here are realistic timelines by project type and the factors that speed up or slow down delivery.
Maira Koin
CEO, F Koin Tech
Published
13 October, 2026
Most custom software projects take between 2 and 9 months. A simple internal tool can launch in 3 to 8 weeks, a startup MVP commonly takes 2 to 4 months, a customer portal or business application usually takes 3 to 6 months, and a multi-module ERP or large platform can take 6 to 12 months or longer. These are typical industry ranges. Your timeline depends mainly on scope, decision speed, and integrations.
Typical timelines by project type
Project type | Typical timeline |
|---|---|
Simple internal tool or automation | 3 to 8 weeks |
MVP for a startup | 2 to 4 months |
Customer or employee portal | 3 to 5 months |
Ecommerce or marketplace platform | 3 to 6 months |
Mobile app with backend | 3 to 6 months |
Custom ERP (multiple modules) | 6 to 12+ months |
These assume a focused team and timely feedback.
Where the time actually goes
Discovery and planning: defining users, features, and priorities
Design: user flows, wireframes, and interface design
Development: frontend, backend, database, and integrations
Testing: functional, performance, and security checks
Deployment and training: going live and helping users adopt it
Skipping discovery to "save time" usually adds more time later through rework.
What slows projects down
Changing scope midway without adjusting priorities
Slow feedback or approvals from the client side
Third-party integrations with poor documentation
Missing content or data like product lists, documents, or test accounts
Unclear ownership of decisions inside the business
How to launch sooner
Prioritise ruthlessly. Split features into must-have for launch and nice-to-have for later.
Launch in phases. Release one module or user group first, then expand.
Assign one decision maker. Projects move faster when one person can approve designs and answer questions quickly.
Prepare data early. Start cleaning and organising data while design is underway.
Use proven components. Authentication, payments, and notifications do not need to be invented from scratch.
Our approach
F Koin Tech sets realistic timelines with clients based on complexity and requirements, and shares regular updates throughout, as described in our FAQs and how we work. If you have a deadline in mind, talk to us and we will help you plan a scope that fits it.
