OSRS Grand Exchange tax explained without the guesswork

Know the current rule, then keep the date beside it

The Grand Exchange convenience fee has changed over the life of Old School RuneScape. At this article's review date, the maintained Grand Exchange reference describes most transactions as subject to a 2% tax, rounded down, with a maximum charge of 5 million coins per item. Items sold below the point where the rounded calculation reaches one coin have no tax obligation.

The date matters because a future game update can change the percentage, exemptions, cap or item-sink design. A calculator should therefore expose the rule it uses and link to a maintained source. LootPath does not silently hard-code a permanent claim: the current reference remains the authority, and the in-game confirmation is the final execution record.

The fee belongs in the selling side of the calculation

When comparing a buy and a later sale, treat the acquisition cost and disposal proceeds separately. The amount used to buy the item is capital committed. When the item sells, tax reduces the coins returned. A simple planning model is: net profit equals sale price minus tax minus purchase price. If you process or use the item before selling, add supplies, charges and other fees as separate costs.

This separation prevents a common mistake: subtracting the tax from the buy side and then also reducing the sale side, or ignoring it entirely because the offer screen shows a gross price. A transaction history or completed test order is more useful than mental arithmetic because it records the price that actually executed.

Calculate tax, net profit and break-even explicitly

For a normal taxable item below the cap, estimate tax by applying the current rate to the unit sale price and following the game's rounding rule. Multiply the unit tax by the quantity sold. Estimated net then becomes quantity multiplied by sale price, minus total tax, minus quantity multiplied by the actual purchase price. Do not use a guide price for one side and an executable price for the other.

Break-even answers a more useful question than gross spread: what minimum selling price returns the capital after tax? Because the fee depends on the sale price and rounding, a calculator or small table is safer than adding a fixed number. Once your expected sell price falls near break-even, small market movement, slow fills and a second test order can erase the opportunity.

• Gross proceeds = quantity × expected unit sale price.
• Net proceeds = gross proceeds − applicable GE tax.
• Net profit = net proceeds − actual acquisition cost − other costs.
• ROI = net profit ÷ capital committed.

The cap changes the effective rate on very expensive items

A per-item tax cap means the effective percentage eventually falls below the headline rate as the sale value rises. That does not automatically make expensive items better trades. Their buy limits, market depth, price jumps and capital concentration can create far more risk than the reduced effective rate saves.

Evaluate capped items in absolute GP as well as percentage ROI. Ask how much of the bank is locked, how long both orders may take and how far the price can move before the tax saving matters. One failed exit can outweigh many small successful trades. The cap is a cost rule, not a recommendation to trade high-value gear.

Why tax changes the way a flip should be screened

Before the fee is considered, a small positive spread may look attractive. After tax, the same spread can be negative. Sort candidates by estimated net after tax, then look at ROI, volume, timestamps and buy limit. A profitable unit with almost no volume is not necessarily a useful hourly opportunity, and a liquid item with a tiny unit margin may require more quantity than the buy limit allows.

Taxes also make repeated testing visible in the result. If every test buy and sell is treated as free discovery, the projected margin will be overstated. Record testing losses and partial fills as part of the method. The goal is not to prove the tracker correct; it is to decide whether the idea remains attractive after real execution costs.

A tax-aware checklist before committing GP

Open the current price signal and confirm both sides are recent. Enter the quantity and expected acquisition price. Apply the current tax rule to the expected sale, calculate break-even and decide the minimum acceptable net. Check volume and buy limit, then place a deliberately small order. Replace every estimate with the actual fill before scaling.

If a rule changes after an update, the correct response is to update the calculation and review date, not merely edit a sentence in the article. That is why LootPath connects this explanation to its market methodology and changelog. Search engines and players should be able to see which rule generated the result.

• Verify the current fee and cap.
• Use actual or test-order prices.
• Calculate unit tax and total tax.
• Set break-even and minimum target profit.
• Check liquidity, buy limit and capital exposure.