Every cryptocurrency transaction has a fee. It goes to the network, not to the casino, not to your wallet provider, not to any company, and it pays the validators or miners who process and confirm your transaction. How much you pay depends almost entirely on which blockchain you're using and how congested it is at the moment you send.
For casual crypto users who deposit once and forget about it, fees are a minor inconvenience. For regular casino players depositing and withdrawing multiple times per week, understanding fees can save meaningful amounts over a year, and choosing the right coin eliminates them almost entirely.
Blockchain networks are decentralised, no single company runs them. Instead, computers around the world (miners or validators, depending on the blockchain) process transactions collectively. Those processors are compensated through transaction fees.
When you send 100 USDT to your Duelbits wallet, the fee pays whoever included your transaction in the block where it was confirmed. Without fees, there would be no incentive to process transactions, the blockchain would stop functioning.
Key principle: Transaction fees are paid to the blockchain network. They do not go to the casino, the wallet app, or any other service. They are a cost of using the blockchain itself.
Bitcoin's fee structure is the most widely discussed, and the most variable, in crypto.
Bitcoin fees are measured in satoshis per virtual byte (sat/vB). A satoshi is the smallest unit of Bitcoin (0.00000001 BTC). A virtual byte (vB) measures the data size of your transaction.
A standard Bitcoin transaction is approximately 140-250 vB of data. The fee is:
Fee in sats = sat/vB rate × transaction size in vB
Fee in USD = Fee in sats × current Bitcoin price / 100,000,000
Example at different congestion levels:
| Network Condition | sat/vB Rate | 200vB Transaction | USD Cost (BTC at $90,000) |
|---|---|---|---|
| Very low congestion | 2 sat/vB | 400 sats | $0.36 |
| Normal | 10 sat/vB | 2,000 sats | $1.80 |
| Moderate congestion | 30 sat/vB | 6,000 sats | $5.40 |
| High congestion | 100 sat/vB | 20,000 sats | $18.00 |
Bitcoin produces one block approximately every 10 minutes. Each block has a maximum size of roughly 4MB. When more transactions are waiting than can fit in the next block, users compete by offering higher fees, miners prioritise transactions with the highest sat/vB rate.
Events that drive congestion:
mempool.space, the most widely used Bitcoin mempool explorer. Shows:
Bitcoin fee timing: Fees are lowest during low-activity periods, typically Sunday evenings and early Monday mornings UTC, and during extended periods of low price volatility. If your Duelbits deposit is not time-sensitive, checking mempool.space and sending during low-congestion windows reduces your fee materially.
Bitcoin's 10-60 minute settlement time already makes it the slowest deposit option for a casino. When combined with variable fees, it's the most expensive and least predictable. For regular casino deposits, Bitcoin's fee structure is the primary reason faster alternatives dominate.
Ethereum's fee system is different from Bitcoin's and has undergone significant evolution since the EIP-1559 upgrade and the post-Merge proof-of-stake transition.
Every operation on Ethereum requires gas, a unit measuring computational effort. A simple ETH transfer uses 21,000 gas. Transferring USDT (an ERC-20 token) uses approximately 65,000 gas due to the additional smart contract interaction.
The fee formula:
Fee in ETH = Gas used × (Base fee + Priority fee)
Fee in USD = Fee in ETH × ETH price
Base fee: Set algorithmically by the Ethereum network based on block demand. It rises when blocks are full, falls when they're empty. The base fee is burned (destroyed), not paid to validators.
Priority fee (tip): An optional additional amount paid directly to validators to incentivise inclusion. In practice, most wallets set this automatically.
The combination of Layer 2 solutions (Arbitrum, Base, Optimism) handling a large portion of transaction volume and post-Merge Ethereum efficiency improvements has reduced mainnet gas fees from their 2021-2022 peaks.
Typical 2026 Ethereum mainnet gas costs:
| Transaction Type | Gas Used | Cost at 5 Gwei | USD at $3,000 ETH |
|---|---|---|---|
| ETH transfer | 21,000 | 0.0000105 ETH | $0.03 |
| USDT ERC-20 transfer | ~65,000 | 0.000033 ETH | $0.10 |
| Complex DeFi interaction | 150,000+ | 0.00075 ETH | $0.23+ |
During periods of high demand, the base fee rises and costs can be 10-20x higher. For casino deposits specifically, a standard ERC-20 USDT transfer typically costs $0.10-$0.25 under normal 2026 conditions.
Unlike Bitcoin where congestion comes from raw transaction volume, Ethereum gas spikes tend to be driven by:
Timing tip: Ethereum gas is consistently lowest on weekday nights UTC (roughly midnight-6am UTC) and over weekend mornings. Gas tracking tools, Etherscan Gas Tracker, gasnow.org, show current base fee and historical patterns.
| Coin / Network | Typical Fee | Fee Type | Predictable? |
|---|---|---|---|
| USDT TRC-20 | <$0.01 | Fixed Tron network fee | ✅ Always near-zero |
| Solana (SOL) | <$0.001 | SOL consumed per transaction | ✅ Always near-zero |
| XRP | ~$0.0002 | Fixed XRP ledger fee | ✅ Always near-zero |
| Tron (TRX) | <$0.01 | Tron bandwidth/energy | ✅ Always near-zero |
| BNB Chain | ~$0.05 | BNB gas fee | ✅ Consistently low |
| Litecoin (LTC) | ~$0.01-$0.05 | LTC miner fee | ✅ Consistently low |
| USDT ERC-20 | ~$0.10-$0.25 | Ethereum gas | ⚠️ Variable |
| Ethereum (ETH) | ~$0.10-$0.25 | Ethereum gas | ⚠️ Variable |
| Dogecoin (DOGE) | <$0.10 | DOGE miner fee | ✅ Consistent |
| Bitcoin Cash (BCH) | <$0.01 | BCH miner fee | ✅ Consistently low |
| Bitcoin (BTC) | $0.50-$5+ | BTC miner fee (sat/vB) | ❌ Highly variable |
Fees hit small deposits harder than large ones. A $1.00 Bitcoin fee on a $10 deposit is a 10% cost. The same fee on a $500 deposit is 0.2%. The smaller and more frequent your deposits, the more fee-efficient network selection matters.
Fee impact by deposit size:
| Deposit | BTC Fee ($1.80) | ETH Fee ($0.15) | USDT TRC-20 Fee ($0.001) |
|---|---|---|---|
| $10 deposit | 18% of deposit | 1.5% | ~0% |
| $50 deposit | 3.6% of deposit | 0.3% | ~0% |
| $100 deposit | 1.8% of deposit | 0.15% | ~0% |
| $500 deposit | 0.36% | 0.03% | ~0% |
For a player depositing $50 three times per week, Bitcoin fees at $1.80 per transaction cost approximately $280 per year in transaction costs alone. USDT TRC-20 over the same period costs under $1.
USDT and USDC are available on multiple blockchains, and the fee you pay is determined entirely by which network you select, not which token.
USDT on different networks:
| Network | Fee | Settlement |
|---|---|---|
| TRC-20 (Tron) | <$0.01 | Seconds |
| ERC-20 (Ethereum) | $0.10-$0.25 | 1-5 minutes |
| Solana | <$0.001 | Seconds |
| BNB Chain (BEP-20) | ~$0.05 | 1-3 minutes |
The same $200 of USDT deposited on TRC-20 versus ERC-20 costs 25-50x less in fees and arrives 60-300x faster. Network selection is the single highest-impact fee decision for any regular depositor.
The critical safety rule: The network you select must match between your sending wallet and Duelbits. Sending USDT on TRC-20 to a Duelbits ERC-20 address results in permanent loss of funds, not just higher fees. TRC-20 addresses start with T. ERC-20 addresses start with 0x. Verify both before confirming.
The dramatic fee difference between Bitcoin, Ethereum, and networks like Solana or Tron comes from fundamentally different consensus mechanisms and throughput design:
Bitcoin was designed for security and decentralisation, not volume. ~7 transactions per second maximum. Each transaction competes for limited block space, driving fees when demand rises.
Ethereum processes more transactions than Bitcoin but still has block size constraints. Its fee mechanism is more sophisticated (EIP-1559 base fee) but still demand-responsive.
Solana processes 65,000+ transactions per second theoretically, with fees set near-zero regardless of demand. The low fee is the result of high throughput, transactions don't need to compete for space.
Tron (TRX-20) similarly designed for high throughput and low fees as a design goal. Network fees are funded by a "bandwidth" model where regular users have free bandwidth up to a daily limit.
XRP Ledger uses a minimum reserve and fee model with extremely low base fees, designed specifically for fast, cheap payment settlement.
Duelbits does not charge a platform fee on deposits or withdrawals. The only cost is the standard blockchain network fee described above.
The exact fee breakdown:
For coins like USDT TRC-20, Solana, and XRP, this fee is so small it is practically zero. For Bitcoin, the fee applied on withdrawal is the current standard market rate.
For the complete deposit and withdrawal process including minimum amounts per coin, see our Duelbits Deposit Guide.
For the full comparison of coin settlement speeds and which coin is best for different use cases, see our Best Crypto for Gambling on Duelbits guide.
What are Bitcoin network fees?
Fees paid to Bitcoin miners to include your transaction in the next block. Measured in satoshis per virtual byte. Typically $0.50-$5 under normal conditions, higher during congestion. Check mempool.space before sending.
What are Ethereum gas fees?
The cost to execute operations on the Ethereum blockchain. Set by a base fee determined by network demand plus an optional priority fee. Typically $0.10-$0.25 for simple ERC-20 transfers in 2026. Rises significantly during DeFi events or market volatility.
Which crypto has the lowest fees?
USDT TRC-20, Solana, and XRP, all under $0.01 per transaction regardless of amount or network conditions.
Does Duelbits charge withdrawal fees?
No platform fee. Standard blockchain network fees apply and are deducted automatically. Near-zero for TRC-20, Solana, and XRP; variable for Bitcoin and Ethereum.
Why are some crypto fees almost free?
High-throughput blockchains (Solana, Tron) process thousands of transactions per second, fees don't need to rise because block space is abundant. Bitcoin and Ethereum have throughput constraints that create fee competition during demand peaks.
How do I pay less in crypto fees?
Use TRC-20 or Solana for most transactions. For Bitcoin, check mempool.space and send during low-congestion periods. For Ethereum, send during low-demand hours (midnight-6am UTC on weekdays).
