Average Purchase Price
See your weighted average cost after buying in several tranches.
How to use it Add each completed purchase: the share quantity, price in pence and any purchase costs in pounds. Add or remove rows as needed.
Weighted average cost
Including purchase costs.
- Total shares
- 15,000
- Total capital invested
- £3,210.00
- Purchase costs included
- £10.00
- Average before costs
- 21.3333p
Purchases only. Does not account for sales or corporate actions.
Why it matters
Your average price depends on how many shares you bought at each price.
10,000 shares at 20p plus 5,000 at 24p cost £3,200 before fees. Adding £5 in costs to each purchase gives £3,210 across 15,000 shares: an average cost of 21.4p.
How it's calculated
The average includes all purchase costs you enter. The before-cost average is shown separately. Include any applicable duty in your costs; it isn’t added automatically.
Assumptions & limitations
Purchases only. Excludes sales, dividends, rights adjustments, splits, consolidations and other corporate actions. This is not an official tax cost-basis or realised-profit calculation. A lower average cost is not, by itself, a reason to buy more.