To buy fractional shares, open a brokerage account at a firm that supports dollar-based investing, link a bank account to fund it, search for an eligible stock or ETF, switch the order ticket from “shares” to “dollars,” and enter an amount — often as little as $1. The whole sequence takes about 10 to 15 minutes once identity verification clears. The mechanics are the easy part. What matters more is knowing how a fractional position behaves once it lands in your account, because it isn’t quite the same instrument as a whole share.
Open and Fund a Brokerage Account
Federal anti-money-laundering rules require broker-dealers to collect your name, date of birth, address, and a taxpayer identification number such as your Social Security number before you can trade.1eCFR. 31 CFR 1023.220 – Customer Identification Programs for Broker-Dealers Most firms also ask about your employment, income, net worth, investment experience, and risk tolerance.2U.S. Securities and Exchange Commission. Investor Bulletin: How to Open a Brokerage Account Have a government-issued ID ready, because bad data can stall verification.
Once you’re approved, link a checking or savings account by entering the routing and account numbers. The brokerage may run a small test deposit to confirm the connection. You’ll also sign a Form W-9 during onboarding, usually as a digital signature, which certifies your taxpayer ID for tax reporting.3Internal Revenue Service. Instructions for the Requester of Form W-9 (03/2024)
Before you commit to a firm, confirm it actually offers fractional or dollar-based trading. Not every brokerage does, and among those that do, the list of eligible securities varies. Major brokerages that support fractional investing charge no commissions on U.S. stock and ETF trades and have no account minimums, so what should drive the choice is feature availability rather than price.4Fidelity. Fractional Shares | Invest in Stock Slices
Check Whether the Stock or ETF Is Eligible
Each brokerage sets its own list of fractional-eligible securities. Some allow dollar-based orders across a broad range of stocks and ETFs; others restrict fractional trading to large-cap names or major index funds.5FINRA.org. Investing in Fractional Shares There’s no universal rule about which securities qualify.
Inside your brokerage app, use the search or screener to pull up the stock. Most platforms show an icon, label, or filter marking the security as available for dollar-based orders, usually on the quote page near the current price or trade button. If that indicator isn’t there, the security probably only accepts whole-share orders. Smaller, thinly traded companies are the ones most often excluded.
Place the Dollar-Based Order
On the stock or ETF’s page, tap the trade button. The default input is share quantity, so switch it to dollars using the toggle labeled something like “Buy in Dollars” or “Dollar Amount.” Enter the amount you want to invest. At some major brokerages, the minimum is $1.4Fidelity. Fractional Shares | Invest in Stock Slices The platform converts your dollars into a share quantity carried out to three decimal places, rounding down to the nearest thousandth, so the executed value can come in a hair below what you entered.6Fidelity. How to Buy Fractional Shares: A Step-by-Step Process
Fractional trades aren’t always locked to market orders. At least one major brokerage supports both market and limit orders for dollar-based trades, though those orders are good for the day only.4Fidelity. Fractional Shares | Invest in Stock Slices Check your platform’s rules rather than assuming. Orders with a fractional component are typically marked “Not Held,” which gives the broker discretion over exact execution price and timing rather than filling at the quote you saw on screen.
A review screen shows the estimated share quantity your dollars will buy at the current price. Confirming is a binding commitment to buy. After the order fills, an email or in-app notification shows the actual price per share and the fractional quantity you acquired.
What You Actually Own After the Purchase
Fractional shares don’t trade on the open market the way whole shares do. Your brokerage generally buys whole shares and allocates fractional slices to customers from its own inventory. The share sits in the firm’s name — the industry term is “street name” — with you as the beneficial owner. You have the economic interest without the share being registered on the company’s books in your name.
Because these orders are filled from inventory rather than routed to an exchange, execution quality depends on the broker’s internal practices. FINRA has said firms must include fractional share orders in their regular best execution reviews.7FINRA.org. Fractional Shares: Reporting and Order Handling On small dollar-based orders you’re unlikely to notice a difference, but the mechanism matters more as position sizes grow.
Dividends and Voting
Fractional shareholders receive dividends in proportion to what they own. If a stock pays a $2.00 per-share dividend and you hold 0.25 shares, you get $0.50. Most brokerages deposit it as cash or reinvest it automatically depending on your account settings.
Voting is where fractional shares fall short of whole shares. With whole shares, one share of common stock typically gets one vote. With fractional shares, you may get no voting rights at all. Some brokerages let fractional holders vote by proxy; others don’t.5FINRA.org. Investing in Fractional Shares Ask your broker about its policy if governance votes matter to you.
Taxes When You Sell
Fractional shares follow the same tax rules as whole shares. Selling at a profit is a capital gain: hold more than a year for long-term rates, sell within a year for short-term treatment at your ordinary income rate. Your cost basis is what you paid plus any pro-rata commission, though with most brokers now at zero commission, basis is usually just the purchase price.8Internal Revenue Service. Publication 550 – Investment Income and Expenses (2025) For shares acquired through automatic or recurring investment plans, full shares are treated as bought first and fractional shares last when calculating your holding period.
The $20 Reporting Threshold
Brokers report fractional share sales on Form 1099-B like any other stock sale, with one wrinkle: if gross proceeds from a fractional sale are less than $20, the broker isn’t required to issue a 1099-B for it.9Internal Revenue Service. Instructions for Form 1099-B (2026) You still owe tax on the gain either way. The threshold only affects the broker’s reporting duty, not yours.
Wash Sales
Fractional investors making frequent small buys walk into wash sales more often than they realize. If you sell a stock at a loss and buy substantially identical shares within 30 days before or after the sale, the loss is disallowed.10Office of the Law Revision Counsel. 26 U.S. Code 1091 – Loss From Wash Sales of Stock or Securities The disallowed amount is added to the basis of the replacement shares. Brokers track this automatically within the same account for covered securities and report the disallowed loss in Box 1g of your 1099-B.9Internal Revenue Service. Instructions for Form 1099-B (2026) If you hold the same stock at a second brokerage, tracking is on you.
Restrictions Worth Knowing Before You Buy
Fractional shares cannot be transferred between brokerages. The Automated Customer Account Transfer System, which handles standard broker-to-broker moves, doesn’t support fractional positions. Move your account to a new firm and any fractional holdings have to be sold first, with only the cash proceeds coming across.11Fidelity Investments. Fractional Share Trading That forced sale is a taxable event, so time any transfer with the tax hit in mind.
Stock splits also treat fractional positions differently in one direction. A 2-for-1 forward split doubles your fractional share count the same way it doubles whole shares: 0.50 becomes 1.00. A reverse split can leave you with a remainder below the broker’s supported minimum, in which case the leftover is sold and you receive cash in lieu. That cash payment is a taxable sale of the fractional piece, with the gain or loss based on your cost basis and the average trading price around the split’s effective date.
SIPC Coverage
If your brokerage fails, the Securities Investor Protection Corporation protects customer securities and cash up to $500,000 per account, with a $250,000 sub-limit on cash.12SIPC. What SIPC Protects SIPC covers stocks, bonds, Treasuries, mutual funds, and similar securities held at a member firm. It doesn’t name fractional shares specifically, but fractional positions represent beneficial ownership of securities held in the brokerage’s name, which is the custody arrangement SIPC exists to protect. SIPC doesn’t protect against a drop in the market value of what you own. It only steps in when the brokerage itself fails and customer assets are missing.