Put Credit Spreads: The Options Strategy Guide

A put credit spread (also called a bull put spread) involves selling a put at a higher strike and buying a protective put at a lower strike in the same expiration. You collect a net credit upfront, and your maximum loss is capped at the width of the spread minus the credit received.

The Mechanics

Say COIN is trading at $230. You sell the $215 put for $4.50 and buy the $210 put for $3.00. Your net credit is $1.50 ($150 per spread). The spread width is $5 ($500 per spread). Your maximum loss is $500 - $150 = $350. Your maximum profit is the $150 credit. Breakeven is $215 - $1.50 = $213.50. If COIN stays above $215 at expiration, you keep the full $150. If it drops below $210, you lose $350.

Capital Efficiency vs Cash-Secured Puts

A cash-secured $215 put on COIN requires $21,500 in collateral. The same directional bet as a put credit spread requires only $350 in margin (max loss). This 60:1 capital efficiency is why spreads are popular with smaller accounts and traders who want to diversify across many positions. You can run 10 different put spreads for the same capital that one cash-secured put requires.

Selecting Spread Width

Wider spreads collect more premium but have larger maximum losses. Narrower spreads have better risk-reward ratios but collect less premium. Common widths are $2.50, $5, and $10. A $5-wide spread collecting 30% of the width ($1.50 out of $5) is a solid risk-reward setup. Below 20% of width, the reward doesn't justify the risk. Above 40% is unusual and may indicate high event risk.

When to Use Spreads vs Cash-Secured Puts

Use cash-secured puts when you actually want to own the stock at the strike price. Use put credit spreads when you're expressing a directional view without wanting assignment. Spreads are also better when IV is moderate (not extreme) because the premium on a single put may not justify the capital commitment.

Put credit spreads give you the structural edge of premium selling with a defined worst-case scenario that you control before entering the trade.

Defined Risk Eliminates Surprises

With a cash-secured put, a stock can gap down 30% overnight and your loss is massive. With a put credit spread, your loss is capped at the spread width minus credit — no matter how far the stock falls. This defined risk means no margin calls, no surprise assignments eating your buying power, and no single trade threatening your account. You sleep better knowing the worst case in advance.

Better Return on Capital at Risk

While cash-secured puts collect more absolute premium, put credit spreads often generate higher returns on capital at risk. A CSP collecting $4.50 on $21,500 collateral is a 2.1% return. A put spread collecting $1.50 on $350 risk is a 43% return. Yes, the CSP wins more often (lower delta on the short strike), but per dollar at risk, spreads can be more efficient.

Portfolio Diversification

Because spreads require far less capital per position, you can diversify across 10-20 different underlyings instead of concentrating in 2-3 stocks with CSPs. This diversification reduces the impact of any single stock disaster. A portfolio of 15 uncorrelated put spreads is significantly safer than 3 concentrated CSPs, even if the individual win rate is similar.

The Tradeoff: Assignment Is Not a Feature

Unlike the wheel strategy where assignment leads to Phase 2 (covered calls), spread assignment is messy. If the stock drops between your strikes, you're assigned on the short put and need to exercise the long put. Most traders close spreads before expiration to avoid assignment complications. This means spreads are a pure income play, not a stock acquisition strategy.

Flow Proof's scanner and flow data help you identify the best underlying stocks for put credit spreads, while the scoring system confirms institutional support at key levels.

Finding Spread Candidates

The Put Premium Scanner surfaces stocks with elevated IV Rank where premium is richest. For spreads, you're looking for stocks where IV Rank is above 40 (enough premium to make the spread worthwhile) and institutional flow shows accumulation rather than distribution. The setup score's drawdown component helps identify stocks at support levels — ideal for placing your short strike just below support.

Flow-Confirmed Support Levels

When whale flow shows repeated institutional buying at a specific price level (visible as sweep activity at support), that level becomes a natural location for your short strike. Selling a put spread just below a flow-confirmed support level means you're betting alongside institutional money — a much higher-probability setup than selling blindly at a round number.

AI Analysis for Strike Selection

The AI trade card generates specific entry recommendations factoring in IV Rank, support levels, and the current VIX regime. For spreads, the recommended strikes are chosen to maximize the credit-to-width ratio while keeping the short strike below the nearest support level. The "Skip if" condition warns about earnings, sector rotation, or bearish flow that would make the spread risky.