---
title: "How Much Does It Cost to Build Two-Factor Authentication? | UniqueSide"
description: "Building two-factor authentication costs $1,100-$3,200 in ~4 days. Cost breakdown and recommended tech."
url: "https://www.uniqueside.io/feature-cost/two-factor-authentication"
canonical: "https://www.uniqueside.io/feature-cost/two-factor-authentication"
type: "feature-cost"
date: "2026-05-30"
lastmod: "2026-06-16"
---

# How Much Does It Cost to Build Two-Factor Authentication?

Adding two-factor authentication to a product typically costs between $1,100 and $3,200, and takes about 4 days. Implementing TOTP and SMS verification as a second step during the login flow.

## Cost & Timeline

- Managed service integration: from $1,100
- Custom build: up to $3,200
- Timeline: ~4 days
- Complexity: Medium

## Recommended Tech

- Node.js
- Twilio
- Auth0

## Build It with UniqueSide

UniqueSide builds features like two-factor 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)