Breakeven price is the exact price at which a trade neither gains nor loses money. The calculation changes depending on whether you have multiple entries, pay commissions, or are trading options — and getting it wrong leads to poor recovery planning and position management. The calculator above handles all three breakeven types instantly.
How to Use
| Input | What to Enter | Example |
|---|---|---|
| Calculation Type | Stock (single or multiple fills), or options (call/put) | Stock — Multiple Fills |
| Entry Price(s) | Price paid at each fill, separated if multiple | $185, $170 |
| Shares Per Fill | Share count at each entry | 200, 300 |
| Commission Per Trade | Flat fee per trade leg (0 for commission-free) | $6.95 |
| Strike Price | Options strike (options mode only) | $250 |
| Premium Paid | Per-share premium (options mode only) | $8.50 |
The output shows your breakeven price, the percentage move required from your current entry to reach it, and total capital deployed across all fills.
Formula Explained
Stock (weighted): Breakeven = (Σ shares × price) / total shares
Fee-adjusted: Breakeven = (total purchase cost + buy commission + sell commission) / shares
Call at expiry: Breakeven = strike price + net premium paid
Put at expiry: Breakeven = strike price − net premium paid
The weighted average formula matters because a simple average of prices ignores position size. If you buy 200 shares at $185 then 300 more at $170, the arithmetic midpoint is $177.50 — but your actual breakeven is $176.00 because the larger $170 fill carries more weight. That $1.50 difference represents $750 of real recovery required on a 500-share position.
Fee-adjusted breakeven is critical for traders at active volume. Most major brokers charge $0 for stock trades in 2024-2025, but options still run $0.65/contract at Schwab, Fidelity, and TD Ameritrade. On futures, ES (S&P 500 e-mini) commissions plus exchange fees run $2.10-$4.60 per side — on a $5,250 notional contract, that’s a real breakeven hurdle per round trip. Crypto traders on Bybit or Kraken face maker/taker fees of 0.02%/0.06% of notional instead of flat rates, so the fee-adjusted formula becomes: Breakeven = entry price × (1 + taker fee %).
Options premium breakeven is the most misunderstood of the three. Each standard options contract covers 100 shares, so an $8.50 premium per share costs $850 total — and every dollar of that premium must be earned back before expiry for the trade to profit. Beginners often anchor to the strike price and forget the premium layer entirely.
Example Calculations
Scenario 1: Averaging Down on AAPL
- First fill: 200 shares at $185 ($37,000)
- Second fill: 300 shares at $170 ($51,000)
- Total capital: $88,000 across 500 shares
- Breakeven: $88,000 / 500 = $176.00
- Recovery needed: AAPL must rise 3.5% from $170 to reach $176.00
AAPL dropped 8.1% from $185 to $170, but the weighted breakeven is only 3.5% above the current price. That asymmetry is the entire purpose of averaging down — but it comes at the cost of deploying an additional $51,000, nearly 1.4x the original position size.
Scenario 2: Fee-Adjusted Stock Breakeven
- Purchase: 100 shares at $50.00 ($5,000)
- Buy commission: $6.95 → total cost $5,006.95
- Sell commission: $6.95 → total round-trip cost $5,013.90
- Breakeven: $5,013.90 / 100 = $50.14/share
At 10 trades per day, the $13.90 per round trip adds up to $139/day in invisible drag. Even “commission-free” stock traders face SEC fees and FINRA TAF charges that create a fractional per-share hurdle — this calculator makes those costs explicit.
Scenario 3: TSLA Call Option
- Strike: $250
- Premium paid: $8.50/share ($850 total for 1 contract)
- Breakeven at expiry: $250 + $8.50 = $258.50
- Required move: TSLA must close above $258.50 at expiration
With 30 DTE, the stock needs to gain more than 3.4% from the $250 strike just to break even — not to profit. Pairing this with an R-multiple calculator shows whether the upside target justifies the premium paid.
The Averaging-Down Trap
Reducing a $110 breakeven (200 shares of NVDA) to $98 requires buying 300 more shares at $90 — 1.5x the original share count and $27,000 in additional capital. Total capital at risk becomes $49,000 versus the original $22,000. The breakeven dropped $12, but total exposure more than doubled.
Before averaging down, calculate two things: the new breakeven and the required move from the current price to reach it. Breakeven is the floor, not the goal. A well-structured position needs a profit target at 2R or better — meaning the price must travel twice the distance from breakeven to stop loss before you exit. Use the risk-reward calculator alongside breakeven math to confirm the trade still makes sense after averaging.
When to Use This Calculator
- Before adding to a losing position: Calculate exact breakeven and required recovery before committing more capital
- After multiple partial fills: Verify your broker’s displayed average price matches the weighted formula (fill rounding can introduce small errors)
- Options position review: Confirm breakeven at expiry before taking on premium-heavy trades, especially with short DTE
- High-frequency setups: Quantify the per-trade fee drag across your daily volume to understand true profitability threshold
- Crypto trading: Convert percentage-based maker/taker fees into a per-coin breakeven price before sizing positions
Related Tools
- Stock Average Down Calculator — Shows how averaging down shifts your breakeven and total capital at risk across multiple scenario sizes side by side
- Options Breakeven Calculator — Dedicated to options premium breakeven with IV and DTE context for calls, puts, spreads, and straddles
- Trading Fee Calculator — Calculates total commission and fee drag across different brokers and trade frequencies to show the real cost of active trading
Frequently Asked Questions
How do you calculate breakeven price after averaging down?
Multiply each fill’s share count by its price, sum all values, then divide by total shares: (Σ shares × price) / total shares. This is a capital-weighted average. Buying 200 shares at $185 and 300 shares at $170 produces a breakeven of $176.00, not $177.50 — the difference is the larger $170 fill pulling the average down proportionally.
Does commission affect my breakeven price?
Yes, and the impact compounds with trade frequency. Add both the buy-side and sell-side commission to total cost before dividing by shares. A $6.95/trade commission on a 100-share position at $50 creates a $50.14 breakeven. Options traders at $0.65/contract still face this hurdle on every leg. Commission-free stock brokers eliminate flat fees but do not eliminate SEC and FINRA regulatory charges.
What is the breakeven formula for a call option at expiry?
Call breakeven at expiry equals strike price plus net premium paid per share. A $250 strike call purchased for $8.50 breaks even at $258.50. Since each contract covers 100 shares, the $850 total premium must be recovered entirely before the trade is profitable at expiration. This does not account for early exercise or selling the contract before expiry.
What is the breakeven formula for a put option?
Long put breakeven at expiry equals strike price minus premium paid. Short put (cash-secured or naked) breakeven equals strike price minus premium received. A cash-secured put on SPY at a $500 strike sold for $4.20 has a breakeven of $495.80 — SPY must stay above that level at expiration for the seller to avoid a loss.
Why is my broker’s average price different from the weighted average formula?
Brokers display a cost-basis average that may or may not include commissions depending on account settings. Some platforms also round fractional cents during partial fills. Always verify the displayed average against the manual weighted formula — especially after multiple fills across different sessions — and use the fee-adjusted breakeven for any trade where commissions are non-zero.
