GE Flip Calculator
Punch in what you pay and what you sell for. The calculator takes the 2% Grand Exchange tax (5,000,000 gp cap per item) off the top and shows the margin you actually keep, your return on investment, and the most you can make inside one buy-limit cycle. Shortcuts work too: 1.5m, 500k, 2b.
Cash invested: 10,000,000 gp
Tax is 2% of the sell price, capped at 5,000,000 gp per item.
Frequently asked questions
How does GE tax work?
The Grand Exchange takes 2% of the sell price, capped at 5,000,000 gp per item sold. The calculator subtracts it automatically so you see real take-home profit.
What is ROI?
Return on investment - profit divided by what you paid. A 5% ROI flip on a 1M item earns 50k per unit; a 50% ROI on a 10 gp item earns almost nothing. High ROI on cheap items is usually a trap.
What does "per buy-limit cycle" mean?
Every item has a GE buy limit per 4 hours. The cycle profit shows the most you can make flipping that item at the full limit before waiting for the next window.