A rights offering gives existing shareholders short-lived subscription rights to buy new shares, usually at a discount. In a taxable brokerage account at Fidelity, Vanguard, Schwab, or E*TRADE, you may need to track (1) whether receipt of the rights is taxable, (2) how to allocate cost basis between the old stock and the rights if you keep or exercise them, and (3) what happens if you sell the rights or let them expire. This is different from a simple stock split, where total basis usually stays put without a new instrument.
Account wrapper: Taxable brokerage account basics. Filing orientation: Filing taxes for beginners. Sale reporting: 1099-B basis adjustment basics.
Rights vs splits vs spin-offs
| Event | What you receive | Basis pattern | Typical current tax? |
|---|---|---|---|
| Forward stock split | More shares of same ticker | Per-share basis divides; total unchanged | Usually none until sale |
| Spin-off | New ticker shares | Allocate total basis across parent + spinco | Often nontaxable if conditions met, confirm |
| Rights offering | Short-term rights (may trade) | May allocate part of stock basis to rights; exercise adds paid-in cash to new-share basis | Receipt taxability follows Pub 550 / issuer rules; the 15% test mainly drives basis allocation for nontaxable rights; sale of rights is usually taxable |
| Cash dividend | Cash | Basis unchanged (unless return of capital) | Usually taxable in taxable accounts |
Issuer prospectuses and IRS Publication 550-style rules drive the details. Brokers sometimes automate lot updates after exercise; still read the corporate-action notice.
Educational pattern: receipt, sale, exercise, expiration
- Receipt taxability first: Decide whether the distribution of rights is taxable or nontaxable under Pub 550 / the issuer notice. That question is separate from the 15% basis-allocation test.
- Basis allocation (nontaxable rights): If rights are nontaxable and their FMV is 15% or more of the stock’s FMV, you generally must allocate basis between stock and rights. If FMV is under 15%, allocation is usually elective. Taxable or purchased rights follow different basis rules.
- Sell the rights: Proceeds minus rights basis ≈ capital gain or loss. For nontaxable rights, the holding period generally includes the holding period of the underlying stock (it does not restart on receipt). Confirm Pub 550 for your facts.
- Exercise: New shares’ basis ≈ rights basis (if any) plus the subscription price you pay; holding period for the new shares often begins on the exercise date; confirm.
- Expire worthless (nontaxable distributed rights): Expiration generally produces no deductible loss. Allocating basis does not create an expiration-loss exception; basis stays with the original stock. A loss discussion belongs to taxable or separately purchased rights, not ordinary nontaxable plan distributions that lapse.
Worked example: $600 rights sale after allocation
Riley holds 200 shares of IssuerCo with $10,000 total basis ($50/share) at Vanguard. IssuerCo distributes transferable rights. On the distribution date, stock FMV is $40/share and each right’s FMV is $2 (illustrative). Riley receives 200 rights.
Using an educational allocation: rights FMV total = $400; stock FMV total = $8,000; combined = $8,400. Rights share of basis ≈ $400 / $8,400 × $10,000 ≈ $476. Stock basis remaining ≈ $9,524 (~$47.62/share).
Riley sells all 200 rights for $600 before they expire. Gain ≈ $124 ($600 − $476) if Riley allocated that basis. Rights FMV here is only 5% of stock FMV, so under the classic under-15% pattern for nontaxable rights Riley could skip allocating basis. If the rights instead expire, there is generally no deductible loss whether or not Riley elected allocation; nontaxable distributed rights do not create an expiration-loss entry, and basis stays with the stock. If Riley exercises at a $35 subscription price after allocating, new-share basis per share starts from (allocated rights basis ÷ new shares) + $35, then tracks like any other lot.
Practical habits
- Save the rights prospectus, broker FAQ, and any Form 8937-style basis memo.
- Decide early: sell, exercise, or let expire, deadlines are short (often days or weeks).
- If you allocate basis, update both the old stock lots and the rights lots in your spreadsheet the same day.
- Watch for cash-in-lieu if exercise math leaves a fraction (Merger cash-in-lieu basics).
- Do not assume DRIP or automatic enrollment exercises rights for you without a notice.
- Fund investors: closed-end or mutual-fund rights inside a fund wrapper are usually handled at the fund level (Investing basics for beginners).
Checklist
- Read whether receipt is taxable and whether basis allocation is required or elective.
- Calendar the expiration and exercise cutoff in the broker portal.
- Record FMV figures used for any allocation formula.
- If you sell rights, match 1099-B proceeds to allocated basis.
- If you exercise, add cash paid to basis on the new shares.
- If nontaxable distributed rights expire, do not invent a Form 8949 loss from allocated basis; keep basis on the stock. Ask a tax pro before claiming a loss on taxable or purchased rights.
Educational only. Not tax, legal, or investment advice. Rights-offering tax treatment is technical and fact-specific; verify with current IRS publications (including Pub 550), Form 8949 / Schedule D instructions, the issuer prospectus, and a qualified tax professional.