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BlogPublished June 19, 2026 · 16 min read
Cash Account vs. Margin for Selling Puts: Rules, Restrictions, and Good-Faith Violations
Cash account vs. margin for selling puts: how collateral, settlement, and good-faith violations differ, what each account allows, and which fits a premium seller.
The account type you sell puts in quietly decides how much capital each trade ties up, how fast you can redeploy it, and which mistakes can get you restricted.
A cash account funds every position in full and settles trades over a day or two—safe, but capital-constrained, with good-faith violations waiting for the impatient. A margin account frees buying power and speeds settlement, at the cost of borrowing risk and maintenance requirements.
This guide compares cash and margin accounts for selling puts: collateral, settlement, good-faith violations, what each allows, and how to choose. This is education, not investment advice.
You will learn how a cash account and a margin account differ for selling puts, what a good-faith violation is, and how the choice changes your collateral and buying power.
Cash account: everything funded in full
In a cash account you can only trade with settled cash. A cash-secured put sets aside strike × 100 until the option closes or expires, and proceeds from a closing trade take a day or two to settle before you can use them again. Nothing is borrowed, so you can never owe more than you deposited.
Cash account traits:
- Every put is fully cash-secured—strike × 100 locked up
- No naked options—undefined risk needs margin
- Settlement delay (T+1) before proceeds are reusable
- No maintenance margin, no margin calls, no borrowing
This mirrors how an IRA treats options: fully funded, defined-risk only.
Good-faith violations: the cash-account trap
A good-faith violation happens when you buy a security with unsettled proceeds and then sell it before the original sale settles. Active sellers who close a put for a profit and immediately redeploy that not-yet-settled cash can trip this rule without realizing it—and repeated violations can get the account restricted to settled-cash-only trading for 90 days.
How sellers trigger it:
- Closing a put, then opening a new one with the unsettled credit
- Rapidly cycling capital faster than T+1 settlement allows
- Selling assigned shares before the assignment cash settles
- Three violations in a year often means a 90-day restriction
The fix is patience or a margin account: track which cash is settled before redeploying it. This is one reason high-frequency rollers prefer margin—settlement stops being a bottleneck.
Margin account: freed capital, new obligations
A margin account lets you borrow against your holdings and trade with funds before they settle, which removes good-faith violations and frees buying power. For put sellers it also unlocks naked puts and defined-risk spreads sized by margin requirement rather than full strike value—but it adds maintenance margin and the possibility of a margin call.
Margin account traits:
- No settlement delay—proceeds are immediately reusable
- Naked puts and spreads allowed (with approval), sized by margin
- Maintenance margin must be kept or you face a margin call
- Borrowing carries interest and amplifies both gains and losses
Selling a put on margin instead of full cash dramatically raises return on capital—but the capital "freed" is still at risk. What happens when the cushion runs out is covered in margin calls and maintenance margin.
Side-by-side comparison
| Feature | Cash account | Margin account |
|---|---|---|
| Capital per put | Full strike × 100 | Margin requirement only |
| Settlement | T+1 delay | Immediate reuse |
| Naked puts / spreads | No | Yes (with approval) |
| Good-faith violations | Possible | Not applicable |
| Margin call risk | None | Yes |
Margin's higher return on capital is real but cuts both ways—the math is in return on capital for option sellers, and the largest accounts can lower requirements further with portfolio margin vs. Reg T.
Conclusion: match the account to your tempo
Key takeaways:
- Cash accounts fund every put in full and can't go naked
- Good-faith violations punish redeploying unsettled cash
- Margin frees capital and speeds settlement but adds call risk
- Start cash for discipline; move to margin for spreads and tempo
Educational only—not personal financial advice. More in the blog · Request access.
Frequently asked questions
- Can you sell puts in a cash account?
Yes—cash-secured puts are allowed in a cash account, with strike times 100 set aside per contract. Naked puts are not, because uncovered risk requires margin.
- What is a good-faith violation?
A good-faith violation occurs when you buy with unsettled proceeds and sell before the original sale settles. Active put sellers trip it by redeploying not-yet-settled credit; three in a year often restricts the account to settled cash for 90 days.
- Is margin required to sell puts?
Not for cash-secured puts—a cash account funds them in full. Margin is required for naked puts and for spreads sized by margin requirement rather than full strike value.
- Does a margin account avoid settlement delays?
Yes. In a margin account, proceeds are immediately reusable, so good-faith violations do not apply. That tempo is why active rollers prefer margin over a cash account.
- Which is better for selling puts, cash or margin?
Cash accounts keep risk fully defined and suit new sellers and wheel investors. Margin frees capital, speeds settlement, and unlocks spreads, but adds borrowing and margin-call risk—see margin calls.
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