Calculate your CSP return
Estimate premium income, cash required, breakeven, and the two possible outcomes: expires worthless or assigned.
Trade Details
Contracts
Compare two different tickers
The free calculator compares two strikes on the same ticker. Upgrade to Plus to compare cash-secured puts on any two tickers side by side — with a winner highlight on annualized return, cushion, and total income.
Expires worthless — Strike A
You keep the premium. No assignment.
Net premium
$214.35
Return on cash
1.19%
Annualized return
13.58%
Downside cushion
4.07%
Interest on cash
$71.01
Total income
$285.36
* Mathematical projection only. Not a guarantee.
Expires worthless — Strike B
You keep the premium. No assignment.
Net premium
$139.35
Return on cash
0.80%
Annualized return
9.08%
Downside cushion
6.36%
Interest on cash
$69.04
Total income
$208.39
* Mathematical projection only. Not a guarantee.
Assigned — Strike A
You buy the shares at the strike. Premium reduces your cost basis.
Effective cost basis
$177.86
Discount vs today
4.07%
Cash tied in shares
$18,000.00
Interest earned
$71.01
Total income
$285.36
Not annualized — return is not locked in.
Assigned — Strike B
You buy the shares at the strike. Premium reduces your cost basis.
Effective cost basis
$173.61
Discount vs today
6.36%
Cash tied in shares
$17,500.00
Interest earned
$69.04
Total income
$208.39
Not annualized — return is not locked in.
Strike A vs Strike B
Compare premium, downside cushion, and annualized return.
Strike A ($$180)
Premium
$2.15
($214.35)
Cushion
4.1%
Annualized
13.6%
Strike B ($$175)
Premium
$1.40
($139.35)
Cushion
6.4%
Annualized
9.1%
For educational purposes only. Not financial advice. Options involve risk.