Swapping one coin for another directly almost always beats selling to cash and buying back. You skip a fiat on-ramp, skip its spread, and skip the second trade. But the headline trading fee is not your real cost. The spread, the withdrawal charge, and the network fee on the coin you send all land on the same bill.
Here's how to keep that bill small.
Skip the fiat round trip
Plenty of people still sell Bitcoin for dollars, then buy Ethereum with those dollars. Two trades, two spreads, and often two taker fees. A direct BTC/ETH market does it in one trade.
Say you move $200 from BTC into ETH. On a direct pair you cross one spread and pay one fee. Go through cash and you cross two spreads and pay two fees, plus whatever the exchange bakes into its fiat conversion. On a few hundred dollars the difference is a coffee. On five figures it's a car payment.
When routing through cash is still the right call
If your target pair is thin — low volume, wide spread — routing through a liquid stablecoin like USDT can be cheaper than a direct match. Open the order book and look at depth on both routes before you assume direct wins. On deep, popular pairs, direct is simpler and cheaper.
Maker versus taker is the biggest lever you control
Taker orders fill immediately against the book and pay the higher rate. Maker orders rest on the book, add liquidity, and pay less — sometimes a lot less. This single choice usually saves more than any fee-token gimmick.
Run the numbers. On a standard tier, a $200 taker conversion might cost around 0.1%, or $0.20. The same trade as a maker might cost 0.075%, or $0.15. Five cents. Do that weekly for a year and you've saved a couple of dollars — trivial. Now scale it: $20,000 converted monthly, and the maker-taker gap runs into hundreds per year.
How to actually get maker fills
- Place a limit order slightly away from the current price instead of hitting market.
- Wait. A fill isn't guaranteed, and the price can move past you while you sit.
- Turn on post-only if your exchange offers it. It rejects any order that would cross the book, so you can't accidentally pay taker rates.
Post-only is the quiet one. It's mildly annoying the first week and profitable every week after.
Fee discounts: worth it only if you already hold the token
Binance lets users pay spot trading fees with BNB at a discount. If BNB is already in your account, flipping that setting on is close to free money. The discount rate varies by market and changes, so check the current fee schedule rather than trusting a number from a blog post.
Buying a platform token purely to chase a discount is a different decision. The token can drop 10% while you save a few basis points on trades. Run the math on your actual monthly volume before buying an asset you wouldn't otherwise want.
Volume tiers creep up on you
Most exchanges cut your fee as your 30-day volume grows. A casual trader pays the base rate. Someone moving serious size lands in a lower tier without doing anything clever. If you convert large amounts regularly, know which tier you're in — and know how close you are to the next one.
The network fee that erases everything
This is the one that catches people. You convert cheaply, then move the coin to a wallet and get hit with a withdrawal fee bigger than your trading savings. A $5 network charge on a $150 conversion is a 3% haircut — worse than the trading fee you just worked to avoid.
If the coins stay on the exchange, that cost vanishes. If you're moving them, pick a low-congestion network or batch withdrawals instead of sending small amounts repeatedly.
Routes ranked by cost
| Route | Fees involved | Relative cost on $200 |
|---|---|---|
| Sell to fiat, then buy | Two spreads + two taker fees | Highest |
| Direct market order | One spread + one taker fee | Moderate |
| Direct limit (maker) order | One spread + lower maker fee | Lowest |
Exact numbers vary by exchange, pair, and tier. The ranking holds almost everywhere.
Frequently asked questions
Is converting crypto to crypto taxable?
In many jurisdictions, swapping one crypto for another counts as a disposal of the first asset, which can trigger a capital gains event even though you never touched cash. Rules differ by country and change often. Keep records of each conversion's value at the time, and talk to a tax professional who knows your local law.
Are crypto-to-crypto swaps cheaper than using a DEX?
It depends on size and chain. Centralized exchanges often win on large trades because you pay a percentage fee with no gas. Decentralized swaps can compete for small amounts on low-fee networks, but gas on a busy chain can easily exceed a centralized trading fee. Compare both for your specific pair and amount.
Does a limit order always save money?
No. A limit order that never fills means you didn't convert at all, and the price may run while you wait. The saving is real when it fills, but you're trading certainty for a lower fee. For urgent conversions, a market order is the honest choice.
Should I convert through a stablecoin instead?
Sometimes. If your target pair has thin liquidity, routing through USDT or USDC can cut slippage enough to offset the extra trade. Check order book depth on both routes first. On deep, popular pairs, direct is usually cheaper.
Next conversion you make, set a limit order with post-only enabled and check the fee schedule for your tier before you click. Then look at what you actually paid versus what a market order would have cost. The gap is your answer.