SCHD dividend calculator · Contribution-timing audit

Why do monthly SCHD additions earn less in year one?

By DividendSteps Team · Published October 5, 2026 · Current production-code replay

The direct answer

In this calculator's annual-step model, $500 added monthly creates $399.10 of first-year modeled dividends at a 3.07% assumption; putting the same $6,000 in at the start creates $491.20. The $92.10 gap is a timing convention. Both are hypothetical software outputs, not SCHD's declared cash.

This page does not turn a monthly budget into a broker purchase calendar. Actual distributions have dates and eligibility rules.

Reproduce the two first-year cases

The current script sets C = monthly addition x 12, calculates an average modeled value, and multiplies that value by yield. With $10,000 initial, $500 monthly, 0% growth and 3.07% yield: C = $6,000, average = $13,000, and $13,000 x 0.0307 = $399.1000.

For the same $16,000 invested at the start, $16,000 x 0.0307 = $491.2000. Difference = $92.1000. This compares a software rule, not a broker posting.

Monthly model · $399.10$10,000 opening plus twelve $500 additions.

Start-loaded · $491.20$16,000 opening and no additions.

Two defined annual-step scenarios: 10000 initial plus 500 monthly gives 399.10 modeled dollars; 16000 initial with no monthly additions gives 491.20. Both assume 3.07 percent yield, no growth and no DRIP. — Model calculation only. For actual purchase timing, use the dated share-lot worksheet.

A model year is not four broker deposits

Schwab lists 2026 income of $0.2569, $0.2525 and $0.2665 per share for March, June and September payable dates. These rows sum to $0.7759 per share; 100 eligible shares at each event would be $77.59 gross. The next dollar amount is unknown here.

Investor.gov explains that an ordinary purchase on or after the ex-date generally does not receive the next distribution. We do not assign hypothetical monthly additions to a Schwab payment without dated trades.

Download timing and boundary tests (CSV) · Download source map (CSV).

Boundary tests

This retained audit tests the defined annual-step model, zero capital, explicit zero yield, missing yield and negative monthly additions. Missing or invalid input has no expected financial result in this audit; that classification does not assert that the home form rejects it. A within-year purchase date needs a separate dated-share model.

Auditable annual-step cases; no within-year purchase schedule is implied
Case	Initial USD	Monthly USD	Annual addition USD	Exact modeled USD	Audit status
monthly_model	10000	500	6000	399.1000	valid
lump_sum	16000	0	0	491.2000	valid
zero_capital	0	0	0	0.0000	valid_zero
zero_yield	10000	500	6000	0.0000	valid_zero
blank_yield	10000	500	unknown	unknown	unknown
negative_monthly	10000	-500	unknown	unknown	invalid

Questions

Does $399.10 mean SCHD paid $399.10?

No. It is a model result from explicit inputs; issuer payment rows are separate.

Why does investing earlier model more income?

The same dollars occupy the modeled balance longer.

Can I map each monthly addition to a quarterly payment?

Only with dated trades, eligible shares and the applicable ex-date.

Is 3.07% an official current SCHD yield?

No. It is the editable home scenario. Check the dated issuer page or yield reference.

Sources and scope

Production calculator script supplies the formula. Schwab supplies the three completed rows. Investor.gov supplies the eligibility rule. A public calculator discussion motivated the timing question. The locked competitor bodies were read for structure; this arithmetic and test matrix are independent.

For a separate input check, see what the calculator does with a blank or out-of-range year count.