Conditionals · CEFR B1
“If I will” or “If I”? Will in first conditional sentences
Incorrect
If I will have time
Correct
If I have time
In first conditional sentences, use the present simple after if and will in the other clause: “If I have time, I will call you.” Not “If I will have time…”.
The rule
if + present simple, will + base verb: If it rains, we’ll stay in.
The same rule applies after when, as soon as, before, after, until: “I’ll call you when I arrive.”
Exception: will after if is possible when it means willingness or insistence: “If you will help me, I’d be grateful.”
Examples
✗ If I will see him, I will tell him.
✓ If I see him, I will tell him.
✗ If it will rain, we stay home.
✓ If it rains, we will stay home.
✗ I’ll call you when I will arrive.
✓ I’ll call you when I arrive.
Why learners make this mistake
The if-clause describes the future, so it feels logical to use will. Some languages (such as Polish and Russian) do use a future form there.
Remember
No WILL after IF (or WHEN) in the first conditional.
Frequently asked questions
- Can I use “going to” after if?
- Yes when it refers to a plan: “If you’re going to be late, let me know.”
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