What Are Covered Securities and How They Affect Your Cost Basis?

When you sell an investment, calculating your capital gain or loss depends on your cost basis—the original price you paid, adjusted for corporate actions and reinvested dividends. For years, investors had to track this number independently, but that changed with the introduction of covered securities. Today, most stocks, bonds, and funds purchased after specific dates are classified as covered securities, meaning your broker is now responsible for reporting both sale proceeds and your adjusted cost basis to the IRS.

The term covered securities refers to financial assets for which your broker or custodian is legally required to report the cost basis to the Internal Revenue Service on Form 1099-B. This mandatory dual reporting—proceeds and basis—was phased in by Congress to improve tax compliance and reduce the estimated billions of dollars in unreported capital gains. While the shift transfers much of the tracking burden to financial institutions, it also demands that you understand how the reported numbers are calculated and when you need to override them.

In this guide, we’ll unpack the definition of covered securities, examine broker reporting obligations under IRS cost basis rules, and explain how this classification directly shapes your cost basis calculations and tax reporting responsibilities. Whether you’re a buy-and-hold investor or an active trader, mastering the concept of covered securities is essential for accurate, stress-free tax filing.

Quick Answer

Covered securities are investments for which brokers must report cost basis to the IRS and the investor on Form 1099-B. This mandatory reporting simplifies tax filing, reduces errors, and affects how you calculate gains or losses. They generally include stocks, bonds, and ETFs acquired after specific dates.

What Are Covered Securities?

At its core, a covered security is any investment that falls under the IRS cost basis reporting rules outlined in Internal Revenue Code Section 6045. When you sell a covered security, your broker must report to you and the IRS not only the gross proceeds from the sale but also the adjusted cost basis, the date you acquired the shares, and whether the resulting gain or loss is short-term or long-term. This information appears on Form 1099-B, making it much easier to complete your tax return because the numbers the IRS expects to see are already provided.

The key distinction is that the reporting obligation shifts from the investor to the financial institution. Before these rules existed, you were solely responsible for maintaining purchase records, tracking dividend reinvestments, and adjusting for corporate actions to determine your basis. With a covered security, the broker uses sophisticated systems to compute the basis using either a default method (such as first-in, first-out for stocks or average cost for mutual funds) or a method you specifically elect. This doesn’t mean the broker’s figure is always final—certain events like gifts, inheritances, or cross-account wash sales require self-adjustment—but it provides a reliable starting point.

Covered securities identified on Form 1099-B are flagged with a code indicating that the basis is reported to the IRS. This lets you use the “basis reported to IRS” fields on your tax forms (typically Box A for short-term covered transactions and Box D for long-term covered ones on Form 8949). Because the IRS already holds this data, discrepancies between your return and the broker’s report can trigger automated notices, so it’s crucial to verify and, if necessary, accurately adjust those numbers.

The Legislative Timeline and Phased Rollout

The concept of covered securities emerged from the Energy Improvement and Extension Act of 2008, which mandated cost basis reporting as part of a broader effort to close the “tax gap.” The IRS phased in the requirements over several years to give brokers and custodians time to update their systems. Understanding these effective dates helps you determine whether a specific lot of shares is covered or non-covered.

• January 1, 2011: Equities (common stock, preferred stock, and American depositary receipts) acquired in taxable brokerage accounts became covered.
• January 1, 2012: Mutual fund shares and most exchange-traded funds (ETFs) structured as regulated investment companies (RICs) fell under the rules, as long as the shares were acquired on or after that date.
• January 1, 2014: Coverage expanded to debt instruments with a fixed maturity date—such as corporate and government bonds—and options, as well as certain other derivatives. Also included were securities acquired via a dividend reinvestment plan (DRIP) that previously caused tracking headaches.
• January 1, 2016: More complex instruments, including certain REMICs and widely held fixed investment trusts (WHFITs), were added.

If you hold a stock bought in 2010, those shares remain non-covered forever, even if later transferred to a new broker. However, shares of the same stock purchased after the applicable date are covered. This lot-by-lot approach means a single position often contains a mix of covered and non-covered lots, requiring careful attention during tax reporting.

Which Securities Are Considered Covered?

Not every asset you own in a brokerage account is automatically a covered security. The designation depends on the asset class and the acquisition date relative to the phased deadlines. Below is a detailed breakdown.

Equities (Stocks)

Common and preferred stocks, including shares of publicly traded REITs and ADRs, acquired on or after January 1, 2011, are covered. This applies to purchases, acquisitions through corporate actions, and even shares received in a tax-free merger or spin-off that occurred after the cutoff, as long as the underlying security would have been covered based on the original purchase date. For example, if you received shares of a new company in a 2013 spin-off and the original parent shares were purchased in 2012, the new shares are covered.

Mutual Funds and ETFs

Mutual fund shares (including open-end funds) and most ETFs that are structured as regulated investment companies and that were acquired on or after January 1, 2012, are covered. Notably, ETFs structured as grantor trusts—certain commodity and currency ETFs—may have a later coverage date or remain non-covered depending on their specific structure. For mutual funds using the average cost method, brokers default to average basis unless you timely elect a different method. Once you sell shares under average cost, that method is locked in for the entire account, so your choice directly impacts covered basis reporting.

Bonds and Debt Instruments

Most bonds with a fixed maturity, including corporate bonds, Treasury bonds, municipal bonds, and certificates of deposit held in brokerage accounts, became covered if acquired on or after January 1, 2014. Special rules apply to bonds acquired at a discount or premium; the broker must adjust basis to reflect amortization or accretion, and may report adjusted basis accordingly. For municipal bonds, tax-exempt interest does not increase basis, but the broker generally excludes it from the cost basis figure, so you see a lower basis than you might expect—leading to a higher reported gain unless you account for the tax-exempt nature.

Options and Other Derivatives

Options on equities and indices acquired on or after January 1, 2014, are covered. For options that are exercised, the basis of the underlying asset may reflect the cost of the option. For example, if you buy a call option and exercise it to purchase shares, the option premium becomes part of your stock basis; brokers must track this for covered transactions. Complex instruments like futures and foreign currency contracts may still fall outside the covered security rules, so always verify your specific contract.

Broker Reporting Obligations Under IRS Cost Basis Rules

When you sell a covered security, your broker has specific, detailed obligations. Form 1099-B issued for these transactions includes far more information than in the pre-2011 era. The broker must report:

• The sale date and proceeds (Box 1d).
• The date of acquisition (Box 1c).
• The adjusted cost basis (Box 1e).
• Whether the gain or loss is short-term or long-term (Box 2).
• Whether the basis is reported to the IRS (Box 12 or similar designation).
• Any wash sale disallowed loss amount (Box 1g).
• For mutual fund average cost reporting, the average basis per share.

The IRS receives a copy of this data, which means that when you file your tax return, the IRS can automatically cross-check the proceeds shown on your Schedule D against the broker’s 1099. Since the cost basis is also reported for covered securities, the agency no longer needs to rely solely on your self-reported figure, which significantly reduces the chance of an audit—provided your numbers match.

A crucial aspect of broker reporting obligations is the default cost basis method. If you don’t proactively choose a method, the broker must apply the IRS-prescribed default: average cost for mutual funds arranged in a single account, and first-in, first-out (FIFO) for individual stocks and ETFs. Many investors lose the chance to use tax-optimized specific identification if they wait until tax time. Because the broker must report the basis to the IRS using your elected method, you need to instruct them before the settlement date of the sale. This election directly affects how your covered securities appear on Form 1099-B.

How Covered Securities Affect Your Cost Basis Calculations

The classification of a security as covered produces a real, practical impact on the numbers you report. At first glance, you might assume you can simply copy the cost basis from your 1099-B to your tax return. In many cases, that’s enough—but not always. Understanding when and why adjustments are needed prevents overpaying or underpaying taxes.

One common scenario involves wash sales. The broker is required to adjust the basis of replacement shares if a wash sale occurs within the same account and same security. The disallowed loss is added to the basis of the new shares. However, if you repurchase a substantially identical security in a different account (including an IRA), the broker won’t know about that cross-account wash sale and will not adjust the covered basis. It’s your responsibility to increase the basis yourself, then report the adjustment on Form 8949 with the appropriate code (B or E). Failing to do so could cause you to underreport gains later.

Another situation is inherited securities. While the shares may be held in a covered account and appear on 1099-B, the cost basis for an inherited asset is generally its fair market value on the date of the original owner’s death—not what the broker originally reported. Brokers usually do not retroactively update the basis for the step-up unless you provide a death certificate and valuation information. So, you’ll need to adjust the basis downward or upward accordingly, using code B on your tax return to indicate that the reported basis has been corrected.

Gifted securities also require an adjustment. The recipient’s basis is typically the donor’s adjusted basis (for gains) or the fair market value at the time of the gift (for losses), but the broker may still report the donor’s original basis. Again, you must override the number on your return to prevent the IRS from applying an incorrect basis.

Additionally, return of capital distributions, amortization of bond premiums, and certain corporate reorganizations can alter your basis in ways that brokers may or may not already reflect. The 1099-B will often include an adjustment field, but you must verify it against your own records. Because the IRS already has the broker’s basis, any discrepancy between your Schedule D and what the broker filed will prompt a CP2000 notice. Therefore, keeping meticulous supporting documentation is vital, even for covered securities.

Reporting Covered vs. Non-Covered Securities on Your Tax Return

When you file your taxes, the distinction between covered and non-covered securities translates into specific Form 8949 codes and a difference in audit risk. For covered transactions where the basis is reported to the IRS and you make no adjustments, you enter the sale on Form 8949 with Box A checked (short-term) or Box D checked (long-term) and simply copy the proceeds and basis from your 1099-B. The totals then flow to Schedule D. Because the IRS already has the matching data, this is a straight-forward process with little likelihood of inquiry.

If you need to adjust the reported basis—for a carried-over wash sale, inherited step-up, gift basis, or another reason—you still use Form 8949, but you check Box B (or Box E for long-term) and enter the broker-reported amounts in columns (d) and (e), then in column (g) you provide the corrected basis or adjustment amount. The net gain or loss column (h) reflects the difference. In this scenario, you are essentially telling the IRS, “I see your number, but here’s the correct one.” Because the discrepancy is explained on the form, you can minimize IRS correspondence if you document the reason.

Non-covered securities, by contrast, lack an IRS-reported basis. Brokers may still report proceeds and the date sold, and they might provide a basis figure as a courtesy, but the basis is not transmitted to the IRS. You must enter the cost basis yourself (checking Box B for short-term if basis was not reported to the IRS, or Box E for long-term). If you have incomplete records, reconstructing the basis becomes your responsibility—making these older positions time-consuming and prone to error.

Step-by-Step: Managing Covered Securities for Accurate Tax Filing

Follow these steps to ensure your covered securities are properly handled when tax season arrives.

1. Review your 1099-B carefully: Identify which sales are covered (basis reported to IRS) and note the cost basis, acquisition date, and any wash sale adjustments. Confirm that the reported basis seems reasonable based on your purchase history.
2. Verify and reconcile corporate actions: Check for spin-offs, mergers, or return of capital distributions that may have affected your basis. If the broker’s basis excludes these events, calculate the correct adjusted amount and keep supporting statements.
3. Account for wash sales across accounts: If you triggered a wash sale by buying substantially identical securities in a separate account within 30 days before or after the sale, manually adjust the basis of the replacement shares by adding the disallowed loss. Do not rely on the broker’s reported basis for the original covered sale.
4. Handle inherited or gifted holdings: Determine the correct tax basis—stepped-up to FMV for inheritances, or carryover/gift basis for gifts. Adjust the reported basis and use the appropriate code (B or E) on Form 8949.
5. Choose your cost basis method proactively: Before selling covered securities, decide whether you want to use FIFO, LIFO, specific identification, or average cost (for funds) and communicate your election in writing to your broker. This ensures the 1099-B reflects your strategy.
6. Report accurately on Form 8949 and Schedule D: Enter the broker-provided figures in columns (d) and (e). If no adjustments are needed, check Box A or D; if you do adjust, check Box B or E, list the corrected basis in column (g), and provide a brief explanation. Retain all documentation for at least three years after filing.

Common Mistakes and Pitfalls When Dealing with Covered Securities

Even with the convenience of broker-reported basis, errors remain common. Watch out for these frequent missteps:

• Assuming the broker’s cost basis is always correct and not cross-referencing your own records.
• Forgetting to adjust for wash sales that span multiple accounts, especially IRAs where the wash sale rule still applies.
• Using average cost for mutual fund shares without realizing it locks in future sales, potentially preventing tax-efficient specific identification later.
• Overlooking return of capital distributions that reduce basis, causing you to overstate basis and underreport gains.
• Incorrectly reporting inherited shares by using the decedent’s original cost basis instead of the stepped-up fair market value, leading to overpayment of tax.
• Not marking the corrected basis adjustment on Form 8949 when overriding broker figures, which can produce a mismatch and trigger an IRS notice.
• Failing to elect a cost basis method before the sale settlement date; most brokers will not allow retroactive changes.

FAQ

What are covered securities in simple terms?

Covered securities are investments where your broker is required by law to report the original purchase price (cost basis) and sale proceeds directly to the IRS on Form 1099-B. This simplifies your tax filing because the IRS already has your basis information.

How do I know if my securities are covered?

Check your 1099-B: the form includes a box or notation indicating whether the basis was reported to the IRS. In general, stocks bought after 2011, mutual funds after 2012, and bonds after 2014 in taxable accounts are covered. You can also ask your broker for a lot-by-lot breakdown.

What is the difference between covered and non-covered securities for tax reporting?

For covered securities, the IRS receives your cost basis from your broker, so you usually copy the numbers directly onto your tax return. For non-covered securities, the basis is not reported to the IRS, so you must calculate and enter the cost basis yourself, using your own records.

Can I change the cost basis method for covered securities?

You can choose a cost basis method (such as specific identification) for future sales, but you must instruct your broker before the trade settles. If you’ve already used average cost for a mutual fund, you are locked into that method for all shares purchased before the change, though you can revoke the average cost election for future purchases under certain IRS rules.

Do I need to adjust the cost basis reported on Form 1099-B?

Not always, but you must adjust when events such as a cross-account wash sale, inheritance, gift, or corporate action change the proper tax basis. In these cases, report the adjustment on Form 8949 with the appropriate code, and keep detailed records to explain the difference.

Are inherited stocks considered covered securities?

Yes, inherited securities held in a broker account are generally covered if the decedent acquired the shares after the applicable coverage date. However, brokers typically do not automatically step up the basis to the date-of-death value, so you must manually adjust the basis to the fair market value at inheritance and report the correction on your tax return.

Conclusion

Covered securities have reshaped the landscape of investor tax compliance by moving cost basis reporting from a DIY chore to a shared responsibility between you and your broker. While having the IRS receive a basis figure directly from your financial institution dramatically reduces the risk of errors, it doesn’t eliminate the need for vigilance. Adjusting for cross-account wash sales, proper handling of inherited assets, and strategic election of cost basis methods all remain squarely in your hands. By staying informed about the rules surrounding covered securities—and by verifying every 1099-B you receive—you can file your return confidently, minimize tax notices, and keep the focus on growing your portfolio rather than untangling reporting mistakes.