# Fixed-Fee vs. Time & Materials Pricing

> Two fundamental project pricing approaches where fixed-fee projects charge a predetermined amount regardless of hours worked (requiring time tracking for profitability analysis only), while time & materials projects bill based on actual hours tracked plus expenses (requiring time tracking for client billing), each with different risk profiles and time tracking needs.

- **URL:** https://www.getharvest.com/
- **Category:** Time Tracking Practice
- **Tags:** Pricing, Billing, Project Management
- **Updated:** 2026-03-20 19:58
- **Canonical page:** https://timetrack.works/items/fixed-fee-vs-time-materials-pricing

## Details

## Overview

Fixed-Fee and Time & Materials represent two fundamental approaches to project pricing, each requiring different time tracking strategies and serving different project types.

## Fixed-Fee Projects

**Definition**: Client pays predetermined amount for defined scope.

**Time Tracking Purpose**:
- Internal profitability analysis
- Resource planning
- Future estimation improvement
- Identify scope creep
- NOT for client billing

**Advantages**:
- Predictable client costs
- Incentive for efficiency
- Simpler invoicing

**Risks**:
- Scope creep erodes profit
- Underestimation causes losses
- Requires accurate scoping

## Time & Materials (T&M)

**Definition**: Client pays for actual hours worked plus expenses.

**Time Tracking Purpose**:
- Direct client billing
- Invoice generation
- Budget monitoring
- Scope tracking

**Advantages**:
- Flexibility for changing scope
- Lower risk for vendor
- Transparent costs

**Risks**:
- Unpredictable client costs
- Requires client trust
- No efficiency incentive

## Hybrid Models

**Not-to-Exceed T&M**:
- Bill hourly up to maximum
- Combines flexibility with budget certainty

**Retainer**:
- Fixed monthly fee
- Covers specified hours
- Overage billed separately

## Time Tracking Implications

**Fixed-Fee**:
- Can track to project without task detail
- Internal visibility focus
- Estimate vs. actual comparison

**T&M**:
- Detailed task descriptions required
- Client-facing time entries
- Real-time budget tracking
- Invoice-ready documentation

## Pricing

N/A - These are pricing models, not paid services.

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