Profit Calculator Pro

Profit Calculator PRO

Profit Calculator PRO is a Chrome extension that helps online sellers quickly understand the real profit of each sale. Enter your brutto (VAT‑included) sale price, VAT rate, and your costs (amount or %), and the extension calculates:

- Net profit (after VAT and all costs)
- Profit margin (% of brutto sale)
- A detailed per‑cost expense breakdown

You can also save profiles for different marketplaces (e.g. eBay, Amazon, Etsy) so your usual fees and VAT are just one click away.

Key features:

- Net profit & margin
Enter brutto sale and VAT once
See exact net profit and profit margin for each item

- Flexible cost model
Add any number of cost rows (item cost, marketplace commission, ads, shipping, other fees…)
Each cost can be an Amount or a %
Choose when each cost applies:
- Before VAT (percent of brutto sale)
- After VAT (percent of net revenue)
- After selected costs (percent of a base you define)
- After all other costs
A “Select base costs” dialog lets you precisely control the base for “After selected costs”.

- Per‑cost breakdown
After each calculation, see how much each cost contributed as a net expense
Makes it easy to see which fees hurt your profit the most

- Marketplace profiles
Save/load profiles for different marketplaces or account types (e.g. “eBay DE”, “Amazon UK”) Profiles store:
- VAT rate
- All cost rows (names, values, amount/% and when applies)
- Base‑cost selections for “After selected costs”
Switching profiles is one click, with a confirmation if there are unsaved changes.

- Autosave of current state
Your last entered sale, VAT, and costs are automatically saved as a draft
Closing and reopening the popup does not reset the fields

How the calculation works:

- VAT is extracted from the brutto sale only:
netRevenueAfterVAT = bruttoSale / (1 + VAT%)

- For costs with Type = Amount, the value is used as‑is (VAT‑neutral).
- For costs with Type = %, the percent base depends on When applies:
Before VAT → base = bruttoSale
After VAT → base = netRevenueAfterVAT
After selected costs → base = netRevenueAfterVAT - selectedBaseCosts
After all other costs → base = netRevenueAfterVAT - allOtherCosts

- Finally:
Net profit = netRevenueAfterVAT - sum(all cost expenses)
Profit margin = netProfit / bruttoSale * 100

- Example
Suppose you have:

Brutto sale: €90
VAT: 19%
Item cost: €30 (Amount, Before VAT)
Ads: 5% of sale (Percent, Before VAT)
Marketplace commission: 16% of sale (Percent, Before VAT)
Shipping: €7 (Amount, Before VAT or After VAT – it stays €7)

The extension will:

- Extract VAT from €90 to find net revenue.
- Compute each cost as a net expense from the correct base.
- Show net profit, profit margin, and a per‑cost table so you can see exactly how much Ads, commission, shipping, and item cost each contribute.

Who is it for?

Profit Calculator PRO is ideal for:

- Sellers who want a quick, reliable profit check before listing or pricing
- Sellers who have different fee structures per marketplace and want to switch between them fast
- Anyone who wants more than a simple “price minus costs” calculator — including VAT extraction and detailed cost visibility.