May vs Might: Permission or a More Tentative Possibility
In TOEIC Part 5, may and might can appear in policies, customer notices, forecasts, project risks, and possible future outcomes.
Do not ask “Which one always means a stronger chance?” In ordinary English, both can express possibility. A useful first question is: does the sentence give permission, present an open possibility, or describe a hypothetical or counterfactual result?
The quick choice
First check whether the sentence clearly gives permission. If not, look for a hypothetical or counterfactual pattern. If the sentence only expresses ordinary possibility, may and might can overlap.
May
Formal permission or possibility: customers may return items, employees may apply, delays may occur.
Might
Possibility, especially in hypothetical or counterfactual patterns: the project might be delayed, the plan might have failed, costs might increase.
The signal to remember
This is the MTC move. Use the situation around the blank rather than trying to calculate an exact percentage of possibility.
The sentence gives formal permission. Choose may.
The sentence describes a hypothetical result. Choose might.
The sentence presents an allowed option.
This expresses possibility; in a sentence like this, may can also be possible depending on context and intended nuance.
What to notice
The purpose and structure of the sentence can make the intended meaning clearer.
These can express permission or an available option when the context clearly grants permission.
These can express possibility, including hypothetical or counterfactual results.
Do not force a false percentage rule
May and might can overlap when they simply express possibility. A well-formed practice item needs another signal, such as clear permission or a genuinely hypothetical or counterfactual pattern.
Clear may signal
A policy, instruction, or allowed choice: applicants may submit documents online.
Clear might signal
An imagined alternative or past possibility: the launch might have failed without the backup system.
This is permission.
This is a hypothetical past result.
Under pressure, ask one question: permission, open possibility, or hypothetical result?
Quick TOEIC check
Choose first. Then read the feedback. Use the quick check: clear permission, ordinary possibility, or a hypothetical/counterfactual result?
1. The travel-expense policy states that employees ___ request reimbursement for approved business travel expenses as an allowed option.
2. The company ___ have closed two regional offices, but the emergency loan prevented that outcome.
3. The application instructions state that applicants ___ submit supporting documents electronically or by post; both methods are permitted.
4. The old system ___ have remained in use, but the replacement arrived on time and prevented that outcome.
The mistake to avoid
Do not memorise “may is stronger” and “might is weaker” as an absolute rule. The two forms overlap substantially when they express possibility.
Weak choice
Try to assign an exact probability without using the sentence purpose.
Better choice
Check for permission, an allowed option, or a hypothetical result.
Keep the distinction accurate
Both words can express possibility, so a bare probability contrast is sometimes not enough. A single-answer practice item needs a visible permission or counterfactual signal.
Do not invent a difference when the sentence gives none. Use the strongest visible signal.
Continue building fast sentence decisions
These pages also train the test-taker to use the purpose and visible pattern of the sentence.
Use review to choose the next practice
If a question feels clear during review but was difficult during practice, compare the permission or counterfactual signal with the choice you made.
The Learning Block Diagnostic reviews six MTC study patterns: Speed Trap, Memoriser, Over Thinker, Translator, Passive Listener, and Burnout.
Continue reading
Use these pages for more grammar and review practice.