Understanding the mechanics of cryptocurrency trading—such as transaction limits, deposit and withdrawal rules, and fee structures—is essential for both new and experienced traders. This comprehensive guide breaks down the key aspects of trading operations, including spot, margin, and exchange trading, along with detailed insights into fees and restrictions. Whether you're trading Bitcoin (BTC), Ethereum (ETH), KAIA, or other digital assets, this article provides everything you need to trade efficiently and securely.
Spot Trading: Transaction Limits
Spot trading allows users to buy and sell cryptocurrencies instantly at current market prices. Below are the trading parameters for major crypto pairs:
| Asset Pair | Trading Unit | Minimum Trade Amount | Maximum Trade Size |
|---|---|---|---|
| KAIA/JPY | 0.000001 KAIA | Equivalent to ¥1 | 5,000 KAIA per order |
| BTC/JPY | 0.00000001 BTC | Equivalent to ¥1 | ¥50 million per order |
| ETH/JPY | 0.00000001 ETH | Equivalent to ¥1 | ¥10 million per order |
| XLM/JPY | 0.000001 XLM | Equivalent to ¥1 | ¥1 million per order |
| XRP/JPY | 0.000001 XRP | Equivalent to ¥1 | ¥10 million per order |
| BCH/JPY | 0.00000001 BCH | Equivalent to ¥1 | ¥10 million per order |
| LTC/JPY | 0.00000001 LTC | Equivalent to ¥1 | ¥10 million per order |
Note: For security, certain transactions may require password verification. If you're unsure about your credentials, refer to the platform’s help center.
How Trade Amounts Are Calculated
Buying: The system automatically calculates the maximum amount you can purchase based on your input. Any fractional amount below the trading unit is truncated.
- Example: At a BTC price of ¥6 million, entering ¥10,000 results in 0.00166666 BTC.
Selling: The JPY value is calculated from the entered quantity. Amounts less than ¥1 may be rounded down.
- Example: Selling 0.00166666 BTC at ¥6 million yields ¥9,999.
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Margin Trading: Leverage and Limits
Margin trading enables leveraged positions, allowing traders to amplify potential returns (and risks). Only short selling and repayment buy orders are supported.
| Asset Pair | Trading Unit | Minimum Order Size | Max Order Size | Max Position Size |
|---|---|---|---|---|
| KAIA/JPY | 1 KAIA | 1 KAIA | 5,000 KAIA | 5,000 KAIA |
| BTC/JPY | 0.0001 BTC | 0.0001 BTC | 1 BTC | 1 BTC |
| ETH/JPY | 0.001 ETH | 0.001 ETH | 10 ETH | 10 ETH |
| XLM/JPY | 1 XLM | 1 XLM | 100,000 XLM | 100,000 XLM |
| XRP/JPY | 1 XRP | 1 XRP | 50,000 XRP | 50,000 XRP |
| BCH/JPY | 0.001 BCH | 0.001 BCH | 100 BCH | 100 BCH |
| LTC/JPY | 0.01 LTC | 0.01 LTC | 250 LTC | 250 LTC |
Risk Management Note: Platform-wide position caps apply per asset for risk control. KAIA also has hourly trading volume limits.
Exchange Trading: Order Book Mechanics
Exchange trading involves placing limit or market orders on an open order book.
| Parameter | KAIA/JPY |
|---|---|
| Trading Unit | 100 KAIA |
| Minimum Order Size | 100 KAIA |
| Maximum Order Size | 100,000 KAIA |
| Tick Size | ¥0.01 |
This structure supports larger institutional-style trades with precise price control.
Deposit and Withdrawal Limits
Managing your funds securely requires awareness of deposit and withdrawal thresholds.
| Asset | Min Deposit (per tx) | Min Withdrawal (per tx) | Max Withdrawal (daily) |
|---|---|---|---|
| KAIA | 1 KAIA | 0.1 KAIA (DOSI only) | ¥1 million equivalent |
| BTC | No limit | 0.0001 BTC | Not specified |
| ETH | 0.005 ETH | 0.001 ETH | Not specified |
| XLM | No limit | 3 XLM | Not specified |
| XRP | No limit | 30 XRP | Not specified |
| BCH | No limit | 0.001 BCH | Not specified |
| LTC | No limit | 0.001 LTC | Not specified |
| FLR | Not supported | 0.1 FLR | No daily cap |
Important Notes:
- Partial deposits (e.g., <1 KAIA) are aggregated until the minimum threshold is met.
- Amounts below specified decimal places may not display or be withdrawable.
- FLR cannot be deposited into user accounts.
- Daily withdrawal resets at 23:59 JST.
- Users verified after December 19, 2024, face a ¥5 million withdrawal cap for the first 30 days post-first deposit.
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Fiat Deposit and Withdrawal Limits
Fiat transactions are subject to payment method-specific caps.
| Method | Daily Deposit Limit | Daily Withdrawal Limit | 30-Day Deposit Cap | 30-Day Withdrawal Cap |
|---|---|---|---|---|
| Bank Account | Unlimited | ¥1 million | N/A | N/A |
| PayPay | ¥5 million (past 24 hrs) | ¥5 million (past 24 hrs) | ¥2 million | ¥2 million |
Notes:
- Bank transfers reset daily at midnight.
- PayPay limits are rolling (24-hour window).
- Users with basic verification are limited to ¥1 million withdrawals until full identity verification is completed.
- Withdrawals may fail if the recipient service balance exceeds its limit.
Internal Account Transfers
Transfers between main and margin accounts are flexible and free.
| Transfer Type | Minimum Amount | Maximum Amount |
|---|---|---|
| Main → Margin Account | ¥1 | Up to available balance |
| Margin → Main Account | ¥1 | Based on available transferable funds* |
*Transferable amount = Total collateral minus maintenance and initial margin requirements.
Fee Schedule
Transparent fee structures help traders plan cost-effective strategies.
Spot Trading Fees
- All pairs: Pricing includes spread; no additional commission.
Margin Trading Fees
- Trading Fee: Free
- Borrowing/Lending Fee: Free
- Note: Spread is included in quoted prices.
Exchange Trading Fees (KAIA/JPY)
| Fee Type | Rate |
|---|---|
| Maker Fee | -0.01% |
| Taker Fee | +0.05% |
- Maker Order: Adds liquidity (new order on the book).
- Taker Order: Removes liquidity (matches existing order); includes market orders.
Fee Calculation & Rounding
- Maker fees: Amounts under ¥1 are truncated.
- Taker fees: Amounts under ¥1 are rounded up.
Examples:
- Sell 1,0₀₀ KAIA at ¥14.5 as maker:
Fee = ¥14.5 × 1,₀₀₀ × -₀.₀₁% = -¥₁.₄₅ → You receive ¥₁ - Sell same as taker:
Fee = +¥7.25 → You pay ¥8 - Buy ₁₀₀ KAIA at ¥9₀ as maker:
Fee = ¥₀.9 → Rounded to ¥₀
Fiat Deposit & Withdrawal Fees
| Method | Deposit Fee | Withdrawal Fee |
|---|---|---|
| Bank Account | Free* | ¥4₀₀ (incl. tax) |
| PayPay | Free** | ¥₁₁₀ (incl. tax)* |
*Excludes bank transfer fees
**Automatically triggered via PayPay Money purchases
*Withdrawal goes to PayPay Money balance
Crypto Deposit & Withdrawal Fees
| Asset | Deposit Fee | Withdrawal Fee |
|---|---|---|
| KAIA | Free | ₁ KAIA |
| BTC | Free | ₀.₀₀₁ BTC |
| ETH | Free | ₀.₀₀₅ ETH |
| XLM | Free | ₀.₀₁ XLM |
| XRP | Free | ₀.₁₅ XRP |
| BCH | Free | ₀.₀₀₁ BCH |
| LTC | Free | ₀.₀₀₁ LTC |
| FLR | Not allowed | ₀.₁ FLR |
- Internal transfers between users are free.
- KAIA can only be withdrawn to DOSI.
- FLR deposits are not supported.
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Frequently Asked Questions
Q: Are there any hidden fees in spot trading?
A: No. While there is no direct commission, the bid-ask spread is built into the displayed price, representing the effective transaction cost.
Q: Why can’t I withdraw small amounts of crypto?
A: Due to blockchain and platform limitations, amounts below certain decimal places (e.g., beyond the 6th for KAIA) may not be recognized or withdrawable.
Q: Is margin trading completely free?
A: Yes—there are no trading or funding fees, but the spread is included in pricing, which affects entry and exit levels.
Q: Can I deposit FLR tokens?
A: No. FLR deposits are not supported on this platform, though withdrawals are allowed.
Q: How do maker rebates work?
A: When you place a limit order that adds liquidity (maker), you receive a rebate of -₀.₀₁%. However, amounts under ¥₁ are truncated, so very small trades may not yield a rebate.
Q: What happens if I exceed my daily withdrawal limit?
A: Additional withdrawal requests will be rejected until the next cycle begins—at midnight JST for bank transfers or after a rolling ₂₄-hour window for PayPay.
This guide covers all essential aspects of transaction rules and fee models to help you trade confidently and efficiently across multiple asset classes and trading types.