Quick answer: Every Binance Spot pair has its own trading rules. For BTC/USDT, the Binance Spot Trading Parameters page showed a minimum order size of 5 USDT, a minimum price movement (tick size) of 0.01 USDT and a minimum amount movement (step size) of 0.00001 BTC. If an order breaks one of these rules, the form won't accept it. Referral code CODE2026 is the example in this guide. Updated: Nov 13, 2026.
Most beginners only notice these rules when an order is rejected. The message usually says the amount is too small or the price has too many decimals. This guide walks through the rules table column by column, so you know why that happens and how to fix it before you click Buy or Sell.
Where to Find the Binance Spot Trading Rules
The rules are on a public page called Trading Parameters. In the left menu, choose Spot. Across the top you can switch between quote markets: USDT Markets, USDC Markets, U Markets, USD1 Markets, USD Markets, BNB Markets and BTC Markets. There is also a Search Symbol box, so you can type a pair such as BTC/USDT and jump straight to it.
Each row is one Spot pair. Each column is one rule. The screenshot below was taken for this update on November 13, 2026.
The Binance Spot Trading Rules, Column by Column
Min. Order Size: the smallest order value
This is the smallest total value an order can have, in the quote asset. For BTC/USDT, ETH/USDT, BNB/USDT and the other USDT pairs in the first rows, it was 5 USDT. You see the same number on the trading page: the Total field in the Spot order form reads Minimum 5 USDT.
So a buy of 4 USDT worth of BTC won't go through. Raise the Total to at least 5 USDT. When you sell, remember the rule applies to what the sale is worth, so selling a very small leftover balance can also be blocked.
Min. Price Movement: the tick size
This is the smallest step a price can move by. For BTC/USDT it was 0.01 USDT, so a limit price of 68,823.51 is valid, but 68,823.515 is not. Smaller coins often have finer steps. On the same page, ADA/USDT and XRP/USDT showed 0.0001 USDT, and ONT/USDT showed 0.00001 USDT.
The order book on the trading page uses the tick size too. Its grouping menu starts at 0.01 for BTC/USDT and lets you group prices into bigger steps of 0.1, 1, 10, 50, 100 or 1000. That changes only how the book is shown. It doesn't change the tick size of your order.
Min. Trade Amount and Min. Amount Movement: the step size
These two columns are about the base asset, the coin you buy or sell. For BTC/USDT both showed 0.00001 BTC. The amount you enter must be at least that much and move in steps of that size. For ETH/USDT the step was 0.0001 ETH, for BNB/USDT 0.001 BNB, and for ADA/USDT and XRP/USDT 0.1 of the coin.
A quick note on how the page shows these numbers: at the time of this update it wrote BTC's step as 0,00,001 BTC, with commas in unusual places. Read it as 0.00001 BTC. The order form itself uses normal decimals.
Price Range Execution Rule
BTC/USDT showed 85.00% / 115.00%. Many smaller pairs showed 75.00% / 125.00%, and TUSD/USDT showed 98.00% / 102.00%. The tooltip on the column explains it: in extreme market conditions, if the market price moves outside the limits set by this rule, a taker order may expire or be partly filled. In everyday trading you rarely notice it, but it is one reason a large market order in a very fast market may not fill in full.
Open order limits
Further right, the table lists how many orders you can keep open on one pair. For BTC/USDT it showed a maximum of 200 open limit orders, 5 open conditional orders and 20 linked orders. Conditional orders are the ones that wait for a trigger, like a stop-limit. A beginner placing a few orders will never reach these numbers, but it helps to know they exist.
Binance Spot Trading Rules for BTC/USDT at a Glance
Min. Order Size: 5 USDT
Min. Price Movement (tick size): 0.01 USDT
Min. Trade Amount: 0.00001 BTC
Min. Amount Movement (step size): 0.00001 BTC
Price Range Execution Rule: 85.00% / 115.00%
Max. open limit orders: 200; open conditional orders: 5
All figures were read on November 13, 2026. Binance can change them, so check the page before you trade a new pair.
Three Order Errors These Rules Explain
1. The order is below the minimum
The Total is under 5 USDT. Raise the Amount or the Total until it passes the minimum. If you are selling a tiny leftover balance, you may need to add to it first or keep it.
2. The price has too many decimals
Your limit price doesn't match the tick size. Round it to the step shown in Min. Price Movement. The up and down arrows next to the Price field move it by one valid step.
3. The amount doesn't match the step size
For example, 0.000015 BTC can't be placed on BTC/USDT, because the step is 0.00001 BTC. Use 0.00001 or 0.00002 instead. The slider under the Amount field always picks a valid amount.
Do the Trading Rules Change My Fee?
No. The rules decide whether an order is accepted. The fee depends on your fee level. The Binance Spot fee page showed 0.100% maker and 0.100% taker for a Regular User on November 13, 2026, or 0.075% when paying fees with BNB. On a 5 USDT minimum order, that is 0.005 USDT, or 0.00375 USDT with BNB.
CODE2026 shows up to 20% trade rebates on qualifying Spot trading fees. Since April 29, 2026, Spot referral commission is calculated on net fees, so the amount can be lower.
FAQ
What is the minimum order on Binance Spot?
For the USDT pairs checked, the minimum order size was 5 USDT. Other quote markets have their own minimums, so look at the row for your pair.
What is tick size on Binance?
Tick size is the smallest step a price can move. The Trading Parameters page calls it Min. Price Movement. On BTC/USDT it was 0.01 USDT.
Is the minimum the same for every pair?
The 5 USDT minimum was the same on the USDT pairs in the first rows, but the tick size and step size were different for almost every coin.
Can I trade less than 5 USDT on Binance Spot?
Not as a normal Spot order on those pairs. The form won't accept a Total under the minimum.
Sign Up with Binance Referral Code CODE2026
Now you know why an order can be rejected and how to fix it. When you are ready to open an account, use the Binance referral code CODE2026 sign-up link. Open the CODE2026 sign-up page and check that the top of the page shows Code: CODE2026 before you register.
Disclosure: CODE2026 is my referral code, and I may earn commission from qualifying activity. This is an independent guide, not an official Binance post. Benefits depend on Binance's terms, your region and your eligibility. Crypto trading carries risk. Not financial advice. DYOR.