Your Broker's Default Order Settings Are Choices Made for You

A default is a decision somebody made before you arrived. On an order ticket it might be the order type, the time in force, or whether the order can fill outside regular hours; on the account it might be margin, dividend handling or the method used to pick which shares you sell. Someone at your broker chose each one. They chose it for a large population of customers with different habits and different accounts, and for many of those traders, on most days, the choice is perfectly reasonable, which is exactly why a default can sit unexamined for a long time without causing trouble until the one session when it does.

They are still choices. Yours should be deliberate.

Below are seven settings worth checking once, in order, with the reason for each. Where brokers vary, and they vary a lot here, the only reliable answer is on your own settings screen or in your broker’s help pages.

The seven settings at a glance

Setting	Common starting point	What to check
Order type	Market or limit	Which one the ticket opens with
Time in force	Day	Whether GTC is offered and when it expires
Extended hours	Off, or a toggle	Which order types it accepts
Quantity	Shares or dollars	Whether dollar orders are market orders
Margin	Varies by account	Whether the account is margin-enabled
Dividends	Cash or reinvest	Whether reinvestment is on
Tax lots	Often first in, first out	Which method sells first

On the order ticket

Rule 1: know which order type the ticket opens with

If the ticket opens on a market order and you type a quantity and tap through, you get whatever price the market offers in that moment. In a liquid stock during regular hours that is often close to the quote. In a thin stock, or at the open, it may not be.

Set the default to limit if your platform allows it. You then have to type a price every time. That small act makes you look at the spread.

The trade-off is real. A limit order can miss a fast move entirely, and a trader who genuinely needs to be filled, to exit a position going wrong, for instance, may prefer a market order and accept the price risk.

Rule 2: check the time in force and its expiry

Most tickets default to a day order, which is canceled at the close if unfilled. Good-til-canceled is usually one tap away. Brokers generally put an outer limit on how long a GTC order stays live, and that limit differs from broker to broker, so an order you think of as permanent can quietly expire. The time in force page covers the options.

Old GTC orders are also easy to forget. A resting buy order from weeks ago can fill on a day you would never have chosen. Review open orders on a schedule.

Rule 3: find out what extended-hours eligibility changes

Some tickets carry a toggle that lets an order fill before the open or after the close. Liquidity in those sessions is usually thinner and spreads wider. Many brokers accept only limit orders there, and whether a stop is active outside regular hours depends on the broker, which is covered in do stop orders work in extended hours.

Leave the toggle off by default. Turn it on for a specific order when you mean it.

Rule 4: shares or dollars

Some tickets ask for shares. Others ask for dollars and buy whatever fraction of a share the amount covers. Dollar-based orders are convenient for small, regular purchases. On some platforms they can only be sent as market orders, and fractional shares may have their own rules for transfers, extended hours and order types, so read the fractional-share section of your broker’s help pages before relying on them for active trading.

For sizing a position to a stop, share quantity is usually simpler, since the risk sum works in whole shares and you can see at once what you lose per share if the stop is hit, while a dollar order leaves you working the share count out backwards after the fill.

On the account

Rule 5: know whether margin is switched on

Some accounts are opened as margin accounts by default, or offer margin at signup in a way that is easy to accept without reading. Margin changes what the platform calls buying power, makes the FINRA pattern day trader rule apply, and lets a position be financed with borrowed money that carries interest and can lead to a margin call. If you meant to trade only your own cash, confirm the account type on the account profile screen, and ask your broker to change it if it is wrong.

Rule 6: decide on dividend reinvestment

Reinvestment buys more shares with each dividend. For a long-term holding that can be exactly what you want.

For a trader it adds clutter. Each reinvested dividend creates a new small tax lot with its own cost basis, and a reinvestment that lands within 30 days before or after you sell the same stock at a loss can bring the IRS wash-sale rule into play for those shares. The wash-sale window calculator will show you the dates. Taking dividends as cash keeps the lots clean.

Rule 7: pick the tax-lot method before you sell

Say you hold shares bought at different prices and sell some. The broker has to decide which lots left. Many default to first in, first out. Others offer average cost for some securities, or let you choose specific lots at the time of the sale, and that choice can change the realized gain or loss on the same trade by a wide margin. Set the account method you want, and learn how to override it per sale, as described in choose your tax lots before selling. Ask a tax professional which method suits your situation.

Where this matters less

Some defaults are sound as they stand. A day order that cancels itself at the close protects forgetful traders from stale orders, and extended hours switched off keeps most people out of thin markets they did not mean to enter. Checking a default and keeping it is a perfectly good outcome; the point of the exercise is that you now know what it does.

Buy-and-hold investors feel few of these. Most of them bite on active accounts: frequent orders, thin stocks, short holding periods, and positions built in pieces. If that describes you, block out one quiet evening and go through every screen.