Why did a limit order pay taker fees?
On Binance spot, a regular limit order can trade immediately against orders already waiting in the book. Setting a price limit does not automatically make you a maker: that immediate execution takes liquidity.
Post-only changes the choice. Binance calls this order type LIMIT_MAKER and rejects it if it would immediately match and trade as a taker. You give up that immediate fill rather than take the available quote. An order resting in the book still has no guaranteed fill.
That matters when estimating a strategy's trading costs. A calculation that assumes maker fees for every ordinary limit order can misstate the bill. Check the applicable commission rates for your account and pair, then the maker/taker status of the actual fills—not just the order's label. No universal fee percentage follows from choosing “limit.”
Sources: Binance Spot API order documentation and Commission FAQ, checked October 28, 2026. Existing mechanics, not a new feature announcement.
https://github.com/binance/binance-spot-api-docs/blob/master/rest-api.md#new-order-trade
https://github.com/binance/binance-spot-api-docs/blob/master/faqs/commission_faq.md
#Trading #RiskManagement
On Binance spot, a regular limit order can trade immediately against orders already waiting in the book. Setting a price limit does not automatically make you a maker: that immediate execution takes liquidity.
Post-only changes the choice. Binance calls this order type LIMIT_MAKER and rejects it if it would immediately match and trade as a taker. You give up that immediate fill rather than take the available quote. An order resting in the book still has no guaranteed fill.
That matters when estimating a strategy's trading costs. A calculation that assumes maker fees for every ordinary limit order can misstate the bill. Check the applicable commission rates for your account and pair, then the maker/taker status of the actual fills—not just the order's label. No universal fee percentage follows from choosing “limit.”
Sources: Binance Spot API order documentation and Commission FAQ, checked October 28, 2026. Existing mechanics, not a new feature announcement.
https://github.com/binance/binance-spot-api-docs/blob/master/rest-api.md#new-order-trade
https://github.com/binance/binance-spot-api-docs/blob/master/faqs/commission_faq.md
#Trading #RiskManagement
