Wide vs Narrow Vertical Spreads: Pros and Cons
Summary
Narrow spreads ($1-$2.50 wide) offer lower absolute risk and higher percentage returns on credit spreads, but commissions eat into profits and you need many contracts for meaningful income. Wide spreads ($10-$25) offer better reward-to-risk on debit spreads and require fewer contracts, but each loser stings more. Your account size and strategy determine the optimal width.
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"Should I trade a $2-wide spread or a $10-wide spread?" This question comes up constantly, and the answer depends on what you're optimizing for. Let's break down the trade-offs.
Narrow Spreads: The Case For
Lower dollar risk per contract. A $2-wide credit spread with $0.60 credit has a max loss of $1.40 ($140 per contract). You can take multiple small positions without significant portfolio impact.
Higher percentage return on risk (credit spreads). That $0.60 credit on $1.40 risk is a 43% return if the spread expires worthless. A $10-wide spread collecting $2.00 (same short strike) risks $8.00 for a 25% return.
Easier to scale. With 10 narrow contracts, you can close 5 early to lock in profits while letting the other 5 run. This flexibility isn't practical with 1-2 wide contracts.
Better for small accounts. If your account is $10,000, a $2-wide spread risking $140 is 1.4% of your account. A $10-wide spread risking $800 is 8%. The narrow spread allows proper position sizing.
Narrow Spreads: The Case Against
Commission drag. Trading 10 narrow contracts means 40 option legs (10 × 2 legs × open and close). At $0.65 per leg, that's $26 in commissions on a trade with $600 in maximum credit. That's 4.3% right off the top.
More contracts to manage. Opening and closing 10 contracts requires more attention to fills, especially on less liquid underlyings.
Pin risk multiplied. At expiration, 10 contracts near the short strike means 10 times the assignment headache compared to 1 contract.
Wide Spreads: The Case For
Better reward-to-risk on debit spreads. The math favors wider debit spreads because the short option's premium becomes a smaller fraction of the total cost.
A $5-wide bull call spread might cost $2.80 (max profit $2.20, reward-to-risk 0.79:1). A $20-wide bull call spread might cost $7.50 (max profit $12.50, reward-to-risk 1.67:1).
Fewer contracts, lower commissions. One $20-wide contract has the same max risk as ten $2-wide contracts. Commission on one contract: $2.60. Commission on ten: $26.00.
Simpler management. One or two contracts are easy to monitor. You need just one fill to enter and one to exit.
Wide Spreads: The Case Against
Larger per-contract loss. A full loss on a $20-wide credit spread ($2.00 credit, $18.00 risk) is $1,800. That's a significant hit to most retail accounts.
Lower percentage return (credit spreads). The credit collected doesn't scale proportionally with width. You collect more in absolute terms but less as a percentage of risk.
All-or-nothing feel. With one wide contract, you're either in or out. There's no partial profit-taking by closing half the position.
Side-by-Side Comparison
Assume SPY at $540, selling a bull put spread at the 20 delta put:
| Metric | $2 Wide (10 contracts) | $5 Wide (4 contracts) | $10 Wide (2 contracts) |
The $5-wide spread hits the sweet spot here: reasonable return on risk, manageable commissions, and enough contracts for partial exits.
Rules of Thumb
Credit spreads: Favor $3-$5 widths for most stocks. This balances premium percentage against commission costs. Go narrower ($1-$2) on low-priced stocks under $50. Go wider ($10+) on stocks above $300.
Debit spreads: Lean wider. The reward-to-risk improvement justifies the extra cost. Aim for widths that give you at least 1:1 reward-to-risk after the debit.
Account size under $25,000: Keep widths at $2.50-$5.00 and trade 1-3 contracts. Position sizing is more important than optimizing width.
Account size over $50,000: $5-$10 widths with 2-5 contracts provide meaningful income without excessive concentration.
The best width is the one that fits your account size, keeps risk manageable, and generates enough premium to justify the trade after commissions. OptionsPilot helps by showing premium and risk calculations across multiple spread widths so you can compare directly.