What crypto order types don’t exist in stock trading?
KEY TAKEAWAYS
- Reduce Only is not just a safety switch: a newer reduce-only order with a better price and a bigger size cancels an older one, which can silently remove the stop you already placed.
- Post Only saved 60% of the fees on a $10,000 futures round trip on Binance and nothing at all on Binance spot, where maker and taker cost the same at the entry tier (as of September 2026).
- Rejected Post Only and FOK orders are not written to your order history, so the record you check afterwards shows no trace of the trade you thought you placed.
- Every threshold on this page belongs to a named venue on a named date. None of them is an industry standard, and all of them change.
Almost every “order types explained” guide on the internet was written for stock traders. It gives you three tools — market, limit, stop — and then stops. Open a crypto exchange and the ticket has more switches than that, none of them explained, most of them on by default or hidden by default. This page covers the ones the stock guide could not have mentioned, because in stock trading they do not exist.
Why does a crypto ticket have controls a stock ticket doesn’t?
Because three things are true in crypto that are not true at a stock broker, and each one needs its own switch.
Your position can change sign. On a perpetual futures contract, selling more than you hold does not leave you flat — it turns you short. A stock account has no such gear: sell more than you own and the broker simply refuses. So crypto needs a switch that says this order may only make my position smaller. That switch is Reduce Only.
You are quoted two different prices for the same trade. Crypto venues bill you differently depending on whether your order waited on the book or took what was there — the maker and taker fees. Retail stock accounts bury that split behind zero commission; in crypto you pay it, which is why there is a switch that refuses to let your order be a taker at all. That switch is Post Only.
The market never closes. A stock order marked “day” dies at the closing bell, which quietly cleans up every plan you forgot about. Crypto has no bell. An order you left on Friday is still live on Monday, so the exchange has to ask you explicitly how long it should survive. That question is Time in Force.
What does Reduce Only do, and what happens without it?
Our order-types lesson introduces this switch in one line. Here is what it is actually protecting you from. Reduce Only caps an order at the size of the position it is closing. With the box ticked, an order larger than your position closes what is there and stops. With the box unticked, the surplus opens a brand new position pointing the other way.
That sounds like a beginner mistake nobody would make. It is not, because the size box keeps whatever number you last typed into it. Say you are long 0.15 BTC bought at $60,000 — a $9,000 position — and the box still holds 0.5 from the order you were planning an hour ago. Price is still around $60,000 when you hit sell to get out. You are now short 0.35 BTC, a $21,000 position, on the wrong side of a market you just decided you did not want to be in.
| What happens next | Price | P/L on the 0.35 BTC you did not mean to open |
|---|---|---|
| Small drift up | $60,600 (+1%) | −$210 |
| An ordinary hour in crypto | $61,200 (+2%) | −$420 |
| The move you got out to avoid, but upward | $63,000 (+5%) | −$1,050 |
Our own worked example, not exchange data. Reproduce any row as 0.35 × ($60,000 − new price). The taker fee on the unintended 0.35 BTC adds a further $10.50 at Binance’s 0.0500% USDⓈ-M Regular rate (as of September 2026). Fees on the intended part of the trade are excluded because you would have paid those anyway.
Read the last row against the position you were closing. The trade you exited was worth $9,000. The accidental one is worth $21,000 — more than twice as much — and it is uncapped, because you never set a stop on a position you did not know you had. That asymmetry is the whole argument for the switch.
Binance documents two ways a reduce-only order gets rejected outright: when it points the same way as your open position, and when it points the opposite way but its size exceeds the position and fails the margin check. Both rejections are the switch doing its job. There is a third way a reduce-only order dies, and it is not a rejection at all.
Can Reduce Only cancel a stop you already placed?
Yes. Binance runs what its own documentation calls a reduce-only competition. When two reduce-only orders sit on the same position, the more aggressive one wins and the other is cancelled — not rejected at placement, cancelled after the fact.
The rule applies in one-way mode — the default setting, where a symbol holds a single net position rather than a separate long and short. It has two conditions and both must hold. The new order must have the more aggressive price, and its size must be larger than the part of your position the old order does not already cover. Binance gives the example in units; here it is in bitcoin.
Now put a real trade inside that diagram. Order A is your stop-loss, placed when you opened the position. Order B is the partial take-profit you add three days later, because price has run and you want to bank some of it. You place B. The exchange cancels A. Nothing on the screen shouts about it, and your position — which you believe is protected — is now naked.
What does Post Only save you, in money?
Post Only — labelled GTX, good-till-crossing, in Binance’s own developer documentation — tells the exchange: if this order would fill immediately, throw it away instead. Binance states the effect plainly — the order will exist as a maker order on the order book and never match with orders already there, so you are charged the maker fee and not the taker fee. If the price you chose would cross the book, the system cancels the order at placement.
The saving is not a rule of thumb, it is arithmetic on two published numbers. Here is a $10,000 round trip — in and out — at each venue’s entry-level tier.
| Venue and tier | Taker | Maker | Round trip as taker | Round trip as maker | Post Only saves |
|---|---|---|---|---|---|
| Binance spot, Regular | 0.100% | 0.100% | $20.00 | $20.00 | $0.00 (0%) |
| Binance USDⓈ-M futures, Regular | 0.0500% | 0.0200% | $10.00 | $4.00 | $6.00 (60.0%) |
| Hyperliquid perps, tier 0 | 0.045% | 0.015% | $9.00 | $3.00 | $6.00 (66.7%) |
Our own calculation from each venue’s published fee schedule, read 5 September 2026; no BNB discount, no referral code, no staking tier. Reproduce any row as $10,000 × rate × 2. Fee schedules change — check your own tier before relying on these.
Two things fall out of that table. The first is the size of the prize: on futures, trading as a maker costs $6.00 less per $10,000 round trip. A trader doing a hundred such round trips in a year keeps $600 — on Binance futures and on Hyperliquid alike, which is a coincidence of their current rates rather than a law.
The second is the exception, and it matters more than the rule. On Binance spot at the Regular tier, maker and taker are the same 0.100%. Post Only saves you exactly nothing in fees there. It is still worth using on spot — it stops you crossing a wide spread by accident, which is a real cost — but if you were told “always use post only, it halves your fees,” that advice was written for a fee schedule you are not on.
One more practical point that explains why so few beginners have ever seen this switch: on Binance spot it is hidden. Its own documentation routes you through Settings → the Layout tab → Order Mode → Advanced before the box appears, and says the feature is available on the website only. A setting behind three menus is a setting most guides never mention.
GTC, IOC or FOK — which should you pick?
Time in force answers one question: what should happen to the part of your order that does not fill right now? There are three answers, and the exchange picks the first one for you unless you say otherwise.
| Setting | Unfilled part | You end up with | Use it when |
|---|---|---|---|
| GTC — good till cancel (the default) | Rests on the book until it fills or you cancel it | An order that outlives the reason you placed it | You are placing a level you genuinely intend to leave working |
| IOC — immediate or cancel | Cancelled instantly | Whatever filled at once, and nothing pending | You want in now and a partial fill is acceptable |
| FOK — fill or kill | Kills the whole order, including the part that could have filled | All of it, or none of it | A half position would be worse than no position |
Definitions follow Binance’s published wording (help centre, updated 1 July 2026).
The interesting one is the default. GTC is the setting you get by not choosing, and it is the setting whose failure is slowest and quietest. A resting limit order is a decision you made at one moment, left running in a market that keeps moving.
Placing a limit order at a level you like and walking away looks like patience, but it is a bet on a price rather than a read of what the market is doing when that price arrives. If it never gets there, you miss the move. If it does get there, you were not watching — so you have no idea whether it arrived weak or strong. A GTC order is that bet, extended indefinitely.
Put a number on it. You leave a GTC buy for 0.15 BTC at $58,000 — $8,700 committed. Your reason for wanting that level expires over the weekend, but the order does not. It fills. Three days later the price is $55,000 and you are down $450; at $52,000 you are down $900. Neither number came from a bad plan. They came from a good plan that was allowed to execute long after it stopped being true.
The fix is not to avoid GTC. It is to treat every resting order as an open commitment and review the list the way you review positions — because that is what it is.
Why do some orders never reach your order history?
A stock order that fails leaves a rejected order in your log. Several of these crypto controls fail silently.
Binance says it directly for two of them. A Post Only order that cannot be a maker is cancelled at placement and — in the exchange’s own words — the order will not be recorded in the order history. A FOK order that cannot fill immediately gets the same treatment. In both cases you see a brief message, you look away, and afterwards there is nothing in the record to look back at.
There is a third version of this that is worse, because it removes protection rather than exposure. On USDⓈ-M futures — the contracts margined in stablecoins, which is where most beginners start — Binance caps you at 10 conditional orders per symbol (as of September 2026) — that count includes stop-limit, stop-market, take-profit limit, take-profit market and trailing stop. The entry order is not on that list, but Binance counts it anyway when you open a position using the built-in take-profit / stop-loss function: the position is the first order, the take-profit as the second and the stop-loss as the third.
Divide it out: 10 ÷ 3 = three fully bracketed entries on one symbol, with one slot spare. The fourth entry spends that last slot on the entry itself. And Binance names the exact failure: there are cases where, after the first order fills, the take-profit is placed successfully but the stop-loss is rejected for hitting the ten-order rule. You are left with a target and no stop, on a position you set up in one click and believed was bracketed.
What does each wrong choice cost?
One table, one column that matters: what it costs in money, not in inconvenience. Figures use the same $10,000 position value and the same Binance USDⓈ-M Regular rates as above.
| Control | Wrong choice | What actually happens | Cost | How you catch it |
|---|---|---|---|---|
| Reduce Only | Left off when closing | Closes the position, opens the opposite one with the surplus | $21,000 of unintended exposure from a $9,000 exit; −$420 on a routine 2% move, plus $10.50 in extra fees | Position tab shows a position after you closed one |
| Reduce Only | Added on top of an existing stop, more aggressive and larger | The older reduce-only order is cancelled | The position’s stop is gone; loss is uncapped until you notice | Open-orders count did not rise when you added an order |
| Post Only | Not used on futures | Every fill is a taker fill | $6.00 per round trip — $600 over 100 round trips | Trade history labels each fill maker or taker |
| Post Only | Used at a price that crosses the book | Order cancelled at placement, no order-history entry | The entry is simply missed; cost is whatever the move was worth | Nothing to catch — check the position, not the history |
| Time in force | Left on GTC and forgotten | Fills days later, after the reason expired | −$450 at $55,000, −$900 at $52,000 on a 0.15 BTC order left at $58,000 | Review the open-orders list on the same schedule as positions |
| Time in force | FOK on a thin book | Whole order killed, including the part that could have filled | No position and no record of trying | Nothing to catch — check the position, not the history |
| Conditional order cap | A fourth bracketed entry on one symbol | Take-profit accepted, stop-loss rejected | An unprotected position you believe is protected | Count the conditional orders on the symbol before the fourth entry |
All money figures are our own calculations, shown in full in the sections above. Venue-specific rules are Binance’s, read 5 September 2026; the ten-order cap and the fee tiers are not industry standards.
When is this advice wrong?
If you only trade spot, half of this page does not apply to you. Spot balances cannot go negative, so there is nothing for Reduce Only to protect and most spot tickets do not show it. And on Binance spot, as the fee table showed, Post Only saves nothing at the entry tier. Trading spot on one exchange, the only control here that changes your outcome is time in force.
If you trade rarely, the fee argument is noise. Six dollars a round trip is real money at a hundred round trips a year and irrelevant at four. Chasing maker fills by posting orders that then miss entirely can cost far more than the fee saved — a missed entry on a move that runs is worth many multiples of $6. Optimise fees only after your entries are consistent enough that missing one is a nuisance rather than the whole trade.
Every number here has a venue and a date stapled to it. The 0.0200% maker fee, the 10-order cap, the reduce-only competition rule — all Binance, all read on 5 September 2026. Other exchanges resolve the same situations differently: Bybit’s documentation, for instance, cancels a paired take-profit or stop-loss order the moment the other one triggers, not when it fills. Read your own venue’s rules for the specific control before you rely on it.
Common mistakes
- Calling Post Only an order type. It is a flag attached to a limit order. It cannot exist on its own, and it does nothing to a market order except make it impossible.
- Assuming Reduce Only is a complete safety net. It stops you flipping. It does not stop your older reduce-only orders being cancelled to make room for newer ones.
- Believing the fee saving is universal. It is zero wherever maker and taker cost the same, which includes Binance spot at the entry tier.
- Never opening the time-in-force dropdown. The default is the setting whose failure is quietest, and defaults are chosen for the exchange’s convenience, not your risk.
- Trusting the order history. Rejected Post Only and FOK orders are not written to it, so an empty log is not proof that nothing was attempted.
- Carrying a stock-market mental model across. There is no closing bell to tidy up forgotten orders, and no broker refusing to let a sale turn into a short.
FAQ
Is Reduce Only the same as a Close Position button? No. Close Position sizes the order for you; Reduce Only is a rule attached to an order you size yourself. It caps that order at your current position, so it cannot flip you into the opposite trade. But it is not a free safety net: Binance rejects a reduce-only order that points the same way as your position, and a later reduce-only order with a better price and a bigger size will cancel an earlier one.
Does Post Only always save me fees? Only where the maker fee is lower than the taker fee. On Binance spot at the Regular tier both were 0.100% as of September 2026, so Post Only saves nothing in fees there — what it saves is the spread and a bad fill. On Binance USDⓈ-M futures the same tier paid 0.0200% maker against 0.0500% taker, so a $10,000 round trip costs $4.00 instead of $10.00. Check your own venue’s current fee schedule before assuming either case.
What is the difference between IOC and FOK? Both refuse to rest on the order book. IOC (immediate-or-cancel) keeps whatever fills instantly and cancels the remainder. FOK (fill-or-kill) cancels the whole thing unless the entire size fills at once. On a thin book, IOC leaves you holding a partial position you did not plan; FOK leaves you holding nothing, which is sometimes the safer failure.
Why can I not find the Post Only box on my exchange? On Binance spot it stays hidden until you open Settings, go to the Layout tab, and set Order Mode to Advanced — and Binance’s own documentation says the feature is on the website only, not the app. Options that are hidden by default are exactly the options beginner guides skip, which is how traders end up paying taker fees for years without knowing there was a switch.