How Does Theta Decay Accelerate as an Option Approaches Expiration?

Theta decay accelerates significantly in the final 30 to 45 days before expiration. This is because the time value component of the option's premium, which is all that remains for OTM options, diminishes at an increasing rate.

The uncertainty of the price move is rapidly resolved, causing the extrinsic value to drop sharply.

Why Does Theta Decay Accelerate Significantly in the Final 30 Days before Expiration?
How Is the Rate of Time Decay Affected by the Time Remaining until Expiration?
How Does the ‘Time to Expiration’ Input Affect the Theta of an Option?
Define “Theta Decay” and How It Impacts OTM Options as Expiration Approaches
Does Theta Decay Accelerate or Slow down as an Option Nears Expiration?
Does Theta Accelerate or Decelerate as the Option’s Expiration Approaches?
Why Is Theta Decay Generally Non-Linear, Accelerating Closer to Expiration?
When Does Time Decay Accelerate Most Significantly?

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