Read your own dated purchase schedule · DCA
Supply dates, contributions, assumed comparable unit prices and known or unknown purchase fees. Follow exact carried cash and distinguish two averages without claiming a market return. The calculator starts with prefilled, editable model assumptions and a result. These are not an actual quote, company accounts or recommended values. Edit the inputs and recalculate; Restore example returns to the initial assumptions.
1. Equal-amount DCA and a generalized schedule
Investor.gov defines dollar-cost averaging as investing equal portions at regular intervals, buying more units when prices are lower and fewer when prices are higher. This supplies a definition only, not a claim that a strategy is superior. The application also accepts unequal contributions and irregular explicit dates: those inputs describe a generalized dated cash-purchase schedule rather than strict fixed-amount DCA.
Choose the model, currency and whole units or the fractional step 0.000000000000000001 explicitly. Enter initial cash, including an explicit zero when appropriate. Add one to sixty strictly ascending civil dates from 2000 through 2100. Every contribution and assumed unit price must be positive. Prices must describe the same comparable unit and currency; selecting a currency never converts them.
2. Read carried cash and conditional fees
At each date, opening cash plus the contribution becomes available cash. With a known fee, the model buys the largest quantity fitting that cash at the selected step. The whole-purchase fee applies only when a positive quantity is bought; a zero purchase pays no fee and preserves cash. Unspent cash is carried to the next supplied date. The next-step cash requirement shows why one further quantity step cannot fit.
A blank fee means unknown, not zero. Enter 0 for a known zero fee. Any unknown fee blocks the entire purchase projection: only the total supplied contributions and missing fee rows are shown, without partial quantities, balances or averages. Calculate explicitly after editing; edits, adding or removing rows and Clear conceal the old result.
3. Separate the two averages and the model limits
Weighted execution-price average is purchase spending divided by total units. Model acquisition-cost average adds applied purchase fees to spending before dividing by units. Both are unknown when no units were bought. They are distinct model ratios, not a tax cost basis or an investment return. Exact cash and quantity calculations retain carried fractional cash; recurring ratios use finite 384-significant-digit HALF_EVEN precision. A displayed ≈ marks presentation rounding only; exact working output and original input strings remain in method details.
This is a guide to Datisto. Private features require sign-in and access to your own data. Personal models use your assumptions; availability and permitted use of source data are checked with the particular result. This is not investment advice.