Calculator Inputs
Example Data Table
| Current Shares | Current Avg | New Shares | New Price | Total Fees | New Avg | Break Even |
|---|---|---|---|---|---|---|
| 100 | $50.00 | 50 | $35.00 | $11.00 | $45.04 | $45.06 |
| 200 | $28.00 | 100 | $20.00 | $12.00 | $25.37 | $25.39 |
| 75 | $80.00 | 25 | $60.00 | $10.00 | $75.10 | $75.13 |
Formula Used
Old Cost = Current Shares × Current Average Price + Existing Fees
New Buy Cost = New Shares × New Buy Price + New Buy Fee
Total Shares = Current Shares + New Shares
New Average Cost = (Old Cost + New Buy Cost) ÷ Total Shares
Break Even Price = (Total Cost + Sell Fee - Dividend Credits) ÷ Total Shares
Net Profit at Target = Target Value - Sell Fee + Dividend Credits - Total Cost - Estimated Tax
The calculator uses entered fees and dividend credits to create a more practical estimate than a basic weighted average.
How to Use This Calculator
- Enter your current share count and current average cost.
- Add any previous commission or dealing fee already paid.
- Enter the extra shares you want to buy and the planned buy price.
- Add new buy fees, current market price, target price, and expected sell fee.
- Use dividend, tax, desired return, and portfolio value fields for deeper planning.
- Press Calculate. The result appears above the form and below the header.
- Use the CSV or PDF download options to save your calculation.
Stock Averaging Down Guide
Understanding Average Down Decisions
Averaging down means buying more shares after the price falls. The new purchase lowers the combined average cost if the new buy price is below your current cost. This can make recovery easier, but it also increases exposure to the same stock. A lower average is not automatically a safer trade. The business, trend, liquidity, and personal risk limit still matter.
Why This Calculator Helps
This calculator joins old position data with a planned new purchase. It includes dealing fees, estimated selling costs, dividend credits, target prices, tax estimates, and portfolio size. The result shows the new average cost, break even price, market value, unrealized result, target profit, and required price for your desired return. These figures help you compare a lower average against the extra capital required.
Using the Results Wisely
Look at the cost basis first. Then check the position value against your portfolio value. A large allocation can create stress even when the average price looks attractive. Review the break even price after fees, not only the simple average. Fees may look small, but they can change the result on small trades. Taxes may also reduce net gains when the target is reached.
Planning Multiple Outcomes
Run the calculator with several buy prices and target prices. Compare conservative, normal, and optimistic cases. This simple habit shows how much recovery is needed. It also shows whether adding more shares improves the plan or only hides the loss. When the required exit price remains too high, waiting or reducing exposure may be wiser.
Risk Notes for Traders
Average down only when your reason remains valid. Avoid adding shares just because a loss feels uncomfortable. Review earnings quality, debt, news, sector weakness, and your exit plan. Decide how much capital you can risk before entering the order. The best use of this tool is planning. It supports discipline, but it cannot predict market direction or guarantee future returns. Keep records of each test. A saved result can help you compare later trades, review decisions, and refine rules. Use those records to avoid emotional entries and to measure whether your strategy actually improves.
FAQs
What is stock averaging down?
Averaging down means buying more shares at a lower price than your current average. This reduces the combined average cost per share, but it also increases the money committed to that stock.
Does a lower average guarantee profit?
No. A lower average only changes your cost basis. The stock price must still recover enough to cover your cost, fees, taxes, and desired return.
Why are fees included?
Fees are real trading costs. Adding buy and sell fees gives a more accurate break even estimate than using share prices alone, especially for smaller trades.
What does break even price mean?
Break even price is the estimated price needed to recover your full cost after entered fees and dividend credits. It is not a prediction of future market price.
Can I include dividends?
Yes. Enter expected dividend credit per share. The calculator subtracts total dividend credits from the break even requirement and includes them in target profit estimates.
What is desired return price?
It is the approximate share price needed to reach your selected return percentage after cost basis, sell fee, and dividend credit. Tax is shown separately.
Should I always average down?
No. Averaging down can increase risk. Review company quality, market trend, allocation size, and your exit plan before adding more capital to a losing position.
Can I save my result?
Yes. Use the CSV download for spreadsheet records. Use the PDF download for a quick report that includes the main result table.