---
title: "How Much Does It Cost to Build User Authentication? | UniqueSide"
description: "Building user authentication costs $1,200-$3,500 in ~4 days. Cost breakdown and recommended tech."
url: "https://www.uniqueside.io/feature-cost/user-authentication"
canonical: "https://www.uniqueside.io/feature-cost/user-authentication"
type: "feature-cost"
date: "2026-05-09"
lastmod: "2026-06-19"
---

# How Much Does It Cost to Build User Authentication?

Adding user authentication to a product typically costs between $1,200 and $3,500, and takes about 4 days. Building secure registration login and session handling with hashed credentials and protected routes.

## Cost & Timeline

- Managed service integration: from $1,200
- Custom build: up to $3,500
- Timeline: ~4 days
- Complexity: Medium

## Recommended Tech

- Next.js
- Node.js
- PostgreSQL

## Build It with UniqueSide

UniqueSide builds features like user authentication as part of a 15-day MVP, or as a standalone add-on. Fixed price, direct engineer access, 100% code ownership.

[MVP development services](https://www.uniqueside.io/mvp-development-services) · [Pricing](https://www.uniqueside.io/pricing) · [Start a project](https://tally.so/r/wdaQ1N)