Grammar · Verb tenses · A2 · Elementary

Will vs going to

Last updated 21 July 2026

In short

Use 'going to' for plans and intentions already decided before speaking, and for predictions based on present evidence: 'Look at those clouds — it's going to rain.' Use 'will' for decisions made at the moment of speaking, offers, promises, and predictions based on opinion: 'I think it will rain later.' Both express the future, but the source of certainty differs.

Will vs going to at a glance

	Will	Going to
Core meaning	Instant decisions, offers, promises, opinion-based predictions	Prior plans/intentions, evidence-based predictions
When was it decided?	At the moment of speaking	Before the moment of speaking
Typical signal	I think, I'm sure, probably, I promise	Look at…, I've already booked, visible evidence
Form	will + base verb	am/is/are + going to + base verb
Example	I'll answer that email now.	I'm going to answer that email after lunch — it's already on my list.
Offers and promises	Required — I'll help you carry that.	Not used for spontaneous offers

What is the difference between 'will' and 'going to'?

Both 'will' and 'going to' talk about the future, but they answer a different underlying question: was this decided now, at the moment of speaking, or was it decided earlier? 'Will' expresses a decision made on the spot; 'going to' expresses a plan or intention that already existed before you opened your mouth.

The same logic extends to predictions. A 'will' prediction comes from opinion or general belief; a 'going to' prediction comes from visible evidence in front of you right now.

I'm thirsty — I'll grab a drink from the machine.(decided this second → will)
I'm going to grab a drink from the machine — I've been planning to all morning.(planned earlier → going to)
Look at that driver — he's going to hit the barrier!(evidence right in front of you → going to)

Spontaneous decisions vs prior plans

Use 'will' the instant you decide something, typically in response to new information — an offer to help, a sudden change of mind, a promise. Use 'going to' once the decision already existed before this conversation, even if only by a few minutes.

The photocopier's jammed again — I'll call the technician.(reacting on the spot)
I'm going to call the technician this afternoon; it's on my to-do list.(already decided earlier)

Predictions: opinion or evidence?

For predictions, 'will' is the neutral, opinion-based choice, often softened with 'I think', 'probably' or 'I'm sure'. 'Going to' is the evidence-based choice — you can point to a specific reason, visible right now, for believing the prediction.

I think interest rates will fall next year.(opinion, no visible proof)
The sky is completely black — we're going to get a huge storm.(visible evidence right now)

Offers, promises, and fixed arrangements

'Will' is essential for offers ('I'll carry that for you') and promises ('I'll never forget this'), because both are decided in the instant of speaking, out of goodwill rather than prior planning. 'Going to' cannot replace 'will' in these fixed social functions.

For firm future arrangements with a specific time and place already fixed, the present continuous is often more natural than either 'will' or 'going to' — 'I'm meeting Deniz at six' rather than 'I'm going to meet Deniz at six'.

I'll pay for the taxi — don't worry about it.(an offer, decided now)
I promise I'll text you the moment I land.(a promise)
I'm going to pay for the taxi, don't worry.(an offer needs 'will', not 'going to' → I'll pay)

Common mistakes with will vs going to

Real learner errors, corrected and explained — the fastest way to stop repeating them.

I'm going to help you with those bags.

I'll help you with those bags.

A spontaneous offer decided at the moment of speaking needs 'will', not 'going to'.

Careful, you will drop that vase!

Careful, you're going to drop that vase!

A prediction based on visible evidence right now — the wobbling vase — needs 'going to', not the opinion-based 'will'.

I go to visit my parents next weekend.

I'm going to visit my parents next weekend.

The present simple does not express a personal future plan on its own; 'going to' or the present continuous is needed.

I promise I am going to call you every day.

I promise I'll call you every day.

Promises are decided in the moment of promising, so they take 'will', not 'going to'.

We will move to a bigger office next month; the contract is already signed.

We're going to move to a bigger office next month; the contract is already signed.

A plan already decided and confirmed (the signed contract) needs 'going to', not the spontaneous 'will'.

It going to rain later, according to the forecast.

It's going to rain later, according to the forecast.

'Going to' always needs the auxiliary be (is/am/are) before it — 'it going to' is missing 'is'.

Will vs going to in IELTS

Grammatical Range and Accuracy is 25% of your Speaking and Writing scores — here is where this structure earns marks.

Speaking

Part 3 predictions about society sound more precise with the right choice: use 'will' for general opinion ('I think fewer people will own cars') and 'going to' when you can point to visible evidence ('Given how fast prices are rising, more people are going to switch to public transport').
Offer help naturally in conversation with 'will': 'I'll send you the link after the test' — a small, accurate detail examiners notice as native-like control.

Writing

In Task 2 conclusions, 'will' fits general predictions and recommendations: 'Governments will need to invest more in renewable infrastructure.' Avoid 'going to' in formal writing — it reads as slightly informal compared with 'will'.
When citing a chart's projected data in Task 1, prefer 'is expected to' or 'will' over 'going to', since Task 1 register is formal and 'going to' is associated with spoken, evidence-based prediction.

Practise will vs going to now

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Check this rule in your own writing

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Frequently asked questions

What is the difference between 'will' and 'going to' for the future?

'Will' expresses a decision made at the moment of speaking, an offer, a promise, or an opinion-based prediction. 'Going to' expresses a plan already decided before now, or a prediction based on visible evidence. Both refer to future time, but the source of the decision or evidence differs.

Which is correct: 'It will rain' or 'It's going to rain'?

Both are grammatically correct, but they suit different situations. Say 'It's going to rain' if you can see dark clouds right now — the evidence is visible. Say 'I think it will rain later' as a general opinion without specific proof. Weather forecasts often use both interchangeably.

Can I use 'going to' for offers and promises?

No. Offers and promises are decided in the instant of speaking, so they require 'will': 'I'll give you a hand' (offer), 'I'll always support you' (promise). 'Going to' describes plans that already existed before the conversation, which does not fit the spontaneous nature of an offer.

Is 'going to' more formal than 'will'?

It is usually the opposite — 'will' is the more neutral, formal choice, common in written English and formal predictions, while 'going to' feels slightly more conversational and evidence-based. In IELTS Writing, 'will' is generally the safer, more formal option.

Why do people say 'gonna' instead of 'going to'?

'Gonna' is an informal spoken contraction of 'going to', common in casual conversation and song lyrics. It is grammatically identical to 'going to' but should be avoided in IELTS Speaking and Writing, where standard forms are expected.

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