When a dividend reinvestment plan (DRIP) buys more shares with a cash dividend, those new shares get their own cost basis—usually the reinvestment-day market price times the shares (or fraction) bought. That basis matters later when you sell and your broker issues Form 1099-B. How DRIPs work mechanically: Dividend reinvestment plans. Broader 1099-B adjustments: 1099-B basis adjustment basics. Taxable account framing: Taxable brokerage account basics.
This page is cost-basis tracking for reinvested dividends—not a full DRIP product tour and not wash-sale math.
Why reinvested dividends still create basis
| Event | Tax year effect (taxable account) | Basis effect |
|---|---|---|
| Cash dividend paid | Usually reported on Form 1099-DIV; often taxable even if reinvested | None yet on the old shares alone |
| DRIP buys more shares | Same dividend still taxable; you did not “avoid” 1099-DIV by flipping reinvest on | New lot(s) get basis equal to cash used to buy them (plus fees if any) |
| Later sale | Gain/loss on Form 1099-B uses proceeds minus adjusted basis | If you omit reinvested basis, you can overstate gain |
Reinvestment does not erase the dividend from income. It does give you basis in the new shares so you are not taxed again on the same dollars when you sell—if your records (and the broker’s) keep up. Capital-gains orientation: Capital gains basics. Account-type map: Taxable vs tax-advantaged accounts.
Broker DRIP vs company DRIP vs your spreadsheet
- Brokerage toggle (Fidelity, Charles Schwab, Vanguard, E*TRADE): Most covered securities get basis tracked lot-by-lot after the broker’s covered-share start dates. Download the cost-basis statement annually and match it to 1099-B.
- Direct company DRIP (often Computershare or similar): Transfer-agent statements may be thinner; export every reinvestment confirmation before you move shares to a broker.
- Your own log: Date, ticker, cash dividend, shares bought, price per share, fees. Useful when lots predate broker coverage or after an ACATS transfer.
Covered vs noncovered lots and basis corrections sit in 1099-B basis adjustment basics. Filing workflow: Filing taxes for beginners.
Worked example: four quarterly reinvestments
Riley holds 100 shares of a utility ETF bought years ago for $40 each ($4,000 basis). In a taxable Schwab account, the ETF pays $0.50/share each quarter ($50). Riley leaves DRIP on. Assume a stable $50 share price and no fees for illustration.
| Quarter | Dividend | Shares bought at $50 | New basis added |
|---|---|---|---|
| Q1 | $50 | 1.000 | $50 |
| Q2 | $50.50 (101 shares) | 1.010 | $50.50 |
| Q3–Q4 | similar | ~2 more shares | ~$101+ |
After one year Riley might hold roughly 104 shares with total basis near $4,000 + ~$202 of reinvested dividends (exact fractions follow the broker’s buys). If Riley sells all shares for $5,200 and forgets the ~$202 reinvested basis, taxable gain looks ~$1,200 instead of ~$998—overpaying tax on dollars already reported as dividends. Riley downloads Schwab’s realized-gain report and confirms 1099-B basis includes DRIP lots before filing.
Habits that prevent double taxation theater
- Leave DRIP statements in a tax folder every year—even when you “didn’t sell.”
- When transferring brokers, request a full lot history; do not assume the new custodian invents missing basis.
- On sale, compare 1099-B Box 1e (cost basis) to your lot list; if blank or wrong, fix with broker or Form 8949 adjustments per current IRS instructions.
- In IRAs and 401(k)s, annual DRIP basis tracking is usually irrelevant for yearly 1099-DIV—the account wrapper dominates.
- Prefer specific-identification or broker default methods you understand before selling a thin slice of a DRIP-heavy position.
Named custodians and agents (Fidelity, Schwab, Vanguard, E*TRADE, Computershare) publish help articles on reinvestment and cost basis; their screens change—use the year’s official 1099-B.
Checklist
- Confirm whether the account is taxable before obsessing over DRIP lot basis.
- Treat each reinvestment as a new purchase lot with its own basis.
- Match year-end 1099-DIV (dividends) and later 1099-B (sales) so reinvested cash is not taxed twice as gain.
- Export transfer-agent history before moving a company DRIP into a broker.
- Fix missing basis with the broker before you invent a zero-basis sale.
- Keep Form 8949 / Schedule D habits consistent with Filing taxes for beginners.
Mutual funds often use blended basis instead of lot lists: Average-cost basis for mutual funds.
Educational only. Not tax, investment, or accounting advice. IRS forms, broker basis rules, and covered-security dates change; confirm with IRS.gov publications, your custodian’s cost-basis reports, and a qualified tax professional.