English Teaching

Future Plans: ‘Going To’ vs ‘Will’ — and Why the Difference Matters

CEFR B1  ·  5 min

From my experience:

When Vanessa and I decided to move from Paris to Réunion, we had two kinds of sentences. ‘We’re going to find a flat before we arrive’ — a plan we had already made. ‘It will be fine’ — a prediction we invented on the spot to calm ourselves down. One was grounded. One was hope. English has a different verb form for each.

Today's focus: Going to (plans/intentions) vs will (predictions/spontaneous decisions)

Going to: use when you have already decided, or when the evidence is clear:

  • ‘We’re going to move to Réunion in September.’ (decided plan)
  • ‘Look at those clouds — it’s going to rain.’ (evidence visible)

Will: use for immediate/spontaneous decisions, promises, and opinions about the future:

  • ‘I’ll carry that for you.’ (spontaneous offer — decided just now)
  • ‘She’ll probably be late.’ (opinion/prediction, no visible evidence)

Present continuous: fixed, diary arrangements with another person: ‘I’m meeting the landlord at 3.’

Examples in context

We’re going to start fresh in Réunion — we’ve already signed the lease. (decided plan)
I’ll answer that question — give me a moment. (spontaneous, decided now)
She’s meeting the letting agent tomorrow at ten. (diary arrangement — fixed)

Try it — click to reveal the answer

▶ Which form? Your friend drops a bag. You say: ‘_____ pick that up for you!’ (I’ll / I’m going to)
✓ Answer: I’ll — this is a spontaneous offer, decided in the moment.
‘I’m going to pick that up’ sounds like you had already planned to pick it up before you saw it fall.
▶ ‘Look at the sky — it ___ rain.’ (will / is going to)
✓ Answer: is going to rain — you can see the evidence (dark clouds). ‘Going to’ is used when the cause is visible.
‘It will rain’ would be a general prediction or guess, not based on visible evidence right now.
▶ True or false: ‘Will’ and ‘going to’ are always interchangeable.
✓ Answer: False. They have overlapping uses but carry different meanings about whether a decision was made before or just now.
In casual conversation, many speakers use them interchangeably. In IELTS and formal writing, the distinction matters.
⚡ 5-second rule:

Going to = already decided. Will = decided right now or opinion. When you are making an offer or promise on the spot, always use will.


Independent project; not affiliated with, endorsed by, or accredited by Cambridge University Press & Assessment. Confers no qualification. Cambridge CELTA course completed — 120 supervised teaching hours and four written assignments validated to the required standard.