---
title: "Margin bridge"
description: "Why your contribution margin changed since the same period last year — volume, mix and price."
url: https://support.sapera.io/en/articles/726-margin-bridge
collection: "SaperaBI"
updated: 2026-10-09
language: en
alternates: [da]
---

# Margin bridge

Why your contribution margin changed since the same period last year — volume, mix and price.

The **Margin-bridge** (Margin bridge) tab explains why your contribution margin changed compared to the same period last year, split into three causes.

## What the page shows

-   A waterfall chart: **DB sidste år** (margin last year) → **Volumen** (volume) → **Mix** → **Pris** (price) → **DB i år** (margin this year).
    
-   A key-figure card with the margin, the base (last year), the margin change and the three effects.
    
-   A table of margin, base and margin change per category and product, sorted by change.
    

## How to use it

-   Pick **Regnskabsår** (fiscal year) at the top (defaults to "Indeværende år", the current year) and optionally a **Periode** (period).
    
-   Narrow down with **Afdeling** (department) and **Kategori** (category) to zoom in.
    
-   Read the waterfall from last year to this year: each step shows what explains the change.
    

## Good to know

-   **Volume:** the change in revenue multiplied by last year's margin percentage — so revenue-based, not number of units.
    
-   **Mix:** a shift in sales between categories with different margin percentages.
    
-   **Price:** the change in margin percentage within the categories.
    
-   The comparison is always with the same period last year.
    

## Related

-   [ABC products](https://support.sapera.io/en/articles/724.md)
    
-   [Sales dashboard](https://support.sapera.io/en/articles/705.md)
    
-   [Glossary — terms and abbreviations in SaperaBI](https://support.sapera.io/en/articles/732.md)