Before you sell a taxable brokerage position at a loss, the practical question is not just whether the position is down. It is which accounts, tickers, and automatic orders could make the loss harder to explain after year-end reporting arrives.
Quick answer: what should you check before selling?
- Check the 61-day window: review purchases 30 days before and 30 days after the proposed loss sale.
- Group related accounts: include taxable, joint, spouse, traditional IRA, Roth IRA, and brokerage-window accounts you control or coordinate.
- Pause automatic buys: inspect dividend reinvestment, recurring investments, fractional-share buys, model rebalancing, and pending orders.
- Document the decision: save the candidate lot, trade date, proceeds estimate, replacement exposure reviewed, and setting changes before relying on the loss.
What counts as a wash sale?
Under IRS Publication 550[1] and 26 CFR 1.1091-1[2], a wash sale can occur when you sell stock or securities at a loss and acquire substantially identical stock or securities within 30 days before or 30 days after the sale. That creates a 61-day review period centered on the loss sale date.
The difficult word is substantially. A different ticker is not automatically different exposure, and a different fund sponsor is not a complete answer by itself. If two funds track the same named index, start by treating the replacement as a review item; if the replacement follows a broader or meaningfully different index, write down why you considered it different before you trade.
Which accounts and purchases count?
Publication 550 says to review purchases through an IRA or Roth IRA, and it says a spouse or a corporation you control can matter when substantially identical stock is bought. The practical screen is broader than one brokerage login.
A cross-account example: you sell 100 shares in a taxable account on November 15 for a $1,200 loss. Your spouse’s account buys the same security on November 20, and your Roth IRA has a recurring buy scheduled for December 1. Even if your taxable-account Form 1099-B does not show those facts, they belong in the wash sale review file before you assume the loss is clean.
- Loss sale candidate: record the ticker or CUSIP, account, trade date, shares, lot basis, expected proceeds, and estimated dollar loss before placing the order.
- Pre-sale buys: review recurring buys, dividend reinvestment, fractional-share activity, and recent transfers into the account.
- Post-sale planned buys: check scheduled orders, automatic investment plans, dividend reinvestment settings, and model-portfolio rebalancing instructions.
- Similar exposure: compare issuer, holdings, and index methodology pages before treating a replacement as different.
- Accounts to group: review taxable, joint, spouse, traditional IRA, Roth IRA, and any brokerage window accounts you control or coordinate.
What automation should you pause?
The most common accidental replacement buy is dividend reinvestment. The IRS Instructions for Form 1099-DIV[3] say Form 1099-DIV is generally filed for dividends of $10 or more and that box 1a includes reinvested dividends; your transaction history shows whether the reinvested cash also bought new shares inside the wash sale review window.
Before placing a planned loss sale, treat automation as another trade ticket: turn off dividend reinvestment for the security, cancel recurring buys, check any model or pie rebalancing rule, and write down the date you changed the setting.
In the hypothetical timeline below, the proposed sale is November 15 and the review window is October 16 through December 15. The investor does not just check the sale ticket; they look for the pre-sale buy, the dividend setting, and the spouse or IRA orders that could quietly recreate the position.
| Step | Record | Decision rule |
|---|---|---|
| 1. October 10 setup | Export taxable, joint, IRA, Roth IRA, and spouse-account transactions for the candidate ticker and close substitutes. | No sale order yet; find automatic buys first. |
| 2. October 20 pre-sale activity | A recurring $200 taxable-account buy purchased fractional shares of the same ETF. | That purchase is inside the backward window for a November 15 sale; consider delaying the sale until it falls outside the 30-day lookback. |
| 3. November 12 automation check | Dividend reinvestment is turned off and the next recurring buy is canceled. | Save screenshots or confirmation numbers with the tax-year records. |
| 4. Proposed sale date: November 15 | Candidate loss sale: taxable lot, $1,200 estimated realized loss. | Review October 16 through December 15 before calling the harvest complete. |
| 5. December 1 cross-account check | Spouse account and Roth IRA show no matching buys; no model rebalance is scheduled. | If a matching buy appears, pause and get professional review before relying on the loss. |
| 6. First clean-calendar check: December 16 | No matching buys, no spouse-account buys, no IRA or Roth IRA buys, and no recurring orders remain scheduled. | Save the transaction export, setting changes, and review notes with the tax-year records. |
What will Form 1099-B report?
Broker reporting is useful but incomplete. The IRS Instructions for Form 1099-B[4] say box 1g reports wash sale loss disallowed when covered securities with the same CUSIP are bought in the same account, and brokers are permitted but not required to report more broadly. Publication 550 still says a wash sale loss can be nondeductible even when it is not reported on Form 1099-B.
The same Form 1099-B instructions define covered securities to include stock acquired for cash after 2010, regulated investment company stock acquired for cash after 2011, and certain debt instruments or options acquired after later effective dates. Noncovered securities may have blank basis fields, which is why your own lot history still matters.
What records should you keep?
A useful decision record has four parts: why the loss sale was considered, which lots were sold, what replacement exposure was avoided or selected, and which accounts were reviewed. Wash sale adjustments can be reported on Form 8949[5] and flow into Schedule D[6], while IRS Publication 551[7] explains why basis records matter when gain or loss is later figured.
This record also helps with the bigger year-end picture: capital losses may offset capital gains plus up to $3,000, or $1,500 if married filing separately, with excess losses potentially carried forward. Confirm the annual instructions before filing.
Before you place the order, open Portfolio Tracker and line up the candidate sale against recent transactions, dividend reinvestment, scheduled buys, and current holdings across the accounts you review together. The product does not decide the tax answer for you; it helps surface the future buy or reinvestment date while you can still wait, cancel an automatic order, or document the facts.
The decision rule is conservative: if you cannot document the candidate sale, the pre-sale buys, the scheduled forward buys, and the accounts reviewed, do not treat the loss-sale workflow as complete.
FAQ
Does Form 1099-B catch every wash sale?
No. Same-account, same-CUSIP, covered-security reporting is only part of the picture. Purchases in another brokerage account, a spouse’s account, an IRA, or a Roth IRA may require your own review even if box 1g is blank.
Is waiting 31 days after the sale enough?
Only for the forward-looking part of the rule. Waiting after the sale does not fix substantially identical purchases already made during the 30 days before the loss sale, so the backward review has to happen before the order.
How should I compare replacement funds?
Start with what each fund is designed to track, not just the ticker. Same named index, nearly identical holdings, or an option to reacquire the same exposure should be flagged for professional review; a broader or meaningfully different fund still deserves a written note explaining the difference.
Do reinvested dividends matter?
Yes. A dividend reinvestment can create a small fractional-share purchase inside the review period, even though you never entered a manual buy order. The dollar amount may be small, but the recordkeeping problem is real.
Sources
- IRS Publication 550, Investment Income and Expenses: https://www.irs.gov/publications/p550
- 26 CFR 1.1091-1, wash sale regulation: https://www.ecfr.gov/current/title-26/section-1.1091-1
- IRS Instructions for Form 1099-DIV, dividend reporting and reinvested dividends: https://www.irs.gov/instructions/i1099div
- IRS Instructions for Form 1099-B, covered securities and wash sale reporting: https://www.irs.gov/instructions/i1099b
- IRS Form 8949 information page: https://www.irs.gov/forms-pubs/about-form-8949
- IRS Schedule D information page: https://www.irs.gov/forms-pubs/about-schedule-d-form-1040
- IRS Publication 551, Basis of Assets: https://www.irs.gov/publications/p551