Knowledge Base

Practical articles on inventory management, margins, and admin — written for antique and secondhand dealers.

Looking for how to use the app itself? → To the guide

Rather try it yourself first? → To the demo

Getting started

How to start a secondhand business without drowning in admin

The 7-step lifecycle growing secondhand businesses use to stay on top of things.

VAT & admin

What is margin VAT?

Tax on the profit margin, not the full sale price — with a calculation example.

VAT & admin

How to calculate margin VAT

The formula, the two classic mistakes, and a calculator for your own quarter.

VAT & admin

What are margin goods?

Which goods qualify for the margin scheme, and which don't.

Inventory management

What is dead stock?

Calculate how much capital is tied up in your longest-sitting items.

Inventory management

What is stock turnover?

How many times a year do you sell your entire stock? Work out your own ratio and days on hand.