Both assist with and assist in are correct in American English. The choice depends mainly on what follows assist and what you want the sentence to emphasize.
Assist with commonly introduces a task, matter, responsibility, or thing that receives help. Assist in often introduces an activity, process, or action, especially when followed by an -ing form.
However, this is a usage pattern, not an absolute rule. Both constructions can overlap.
Quick Answer
Use assist with when you are talking about helping with a particular task, matter, or responsibility:
The coordinator will assist with the registration process.
Use assist in when you want to emphasize participation in an activity or process:
The coordinator will assist in organizing the event.
Both are grammatical. You can also find assist with before an -ing form, so it would be too strict to say that with must always be followed by a noun.
For most everyday situations, choose the version that best matches the structure and emphasis of your sentence.
Why People Confuse Them
The confusion comes from the fact that assist has the same basic meaning in both expressions: to help or support.
The prepositions with and in then describe the relationship between the help and the activity or matter being discussed.
Compare these sentences:
- The technician assisted with the repairs.
- The technician assisted in repairing the equipment.
The first sentence presents the repairs as the matter receiving help. The second highlights participation in the act of repairing.
The meanings are close, so changing the preposition does not always create a major difference.
Key Differences At A Glance
| Feature | Assist with | Assist in |
|---|---|---|
| Main idea | Help with a task or matter | Help with or participate in an activity |
| Common pattern | assist with + noun | assist in + noun or -ing form |
| Example | assist with paperwork | assist in preparing paperwork |
| Typical feel | Direct and practical | Often more process-focused |
The distinction is useful, but it should not be treated as an inflexible grammar rule.
Meaning and Usage Difference
Assist with often focuses attention on the thing, task, or responsibility involved.
For example:
Maria assisted with customer inquiries.
The sentence tells us what Maria helped handle.
Assist in can focus more on involvement in an action or process:
Maria assisted in resolving the customer complaints.
Here, the emphasis falls on participation in the process of resolving the complaints.
The two forms can overlap. Consider:
The nurse assisted with the procedure.
The nurse assisted in the procedure.
Both can be grammatical, although the first may sound more natural when describing practical help with a specific procedure.
The structure after the preposition also matters. Assist in + -ing is a well-established pattern:
The team assisted in preparing the report.
But assist with + -ing is also possible:
The team assisted with preparing the report.
The first may place slightly more emphasis on participation in the activity. The second can frame the activity as the task being helped with.
Tone, Context, and Formality
Assist itself is somewhat formal compared with help. That does not mean assist with is formal while assist in is formal.
Both occur in professional, academic, institutional, and everyday contexts.
For example:
Can you assist with these boxes?
This is grammatically fine, although many speakers would simply say Can you help with these boxes?
In professional writing, both forms can work:
The analyst assisted with the monthly report.
The analyst assisted in preparing the monthly report.
The second sentence has a stronger process-oriented feel, but the difference is one of emphasis rather than a strict level of formality.
Which One Should You Use?
Use assist with when the sentence centers on a task, responsibility, object, or practical matter.
- assist with paperwork
- assist with scheduling
- assist with customer requests
- assist with the presentation
Use assist in when the sentence centers on an activity or process.
- assist in developing a plan
- assist in preparing a presentation
- assist in resolving an issue
- assist in conducting an interview
When both choices work, select the one that produces the clearest and most natural sentence.
| Context | Best Choice | Why |
|---|---|---|
| Helping with paperwork | assist with | Focuses on the task |
| Participating in preparation | assist in | Focuses on the activity |
| Helping someone with a project | assist with | Natural for a specific matter |
| Taking part in developing a plan | assist in | Highlights the process |
When One Choice Sounds Wrong
Some combinations can sound awkward even though the general construction is valid.
For example:
She assisted the report.
This is not the normal way to express the intended meaning. A reader expects information about whom she assisted or what she assisted with or in.
Better:
She assisted with the report.
Or:
She assisted in preparing the report.
Another common problem is using assist in directly before a noun when the intended meaning is clearly practical help with that item. For example, assist in the paperwork may sound less natural than assist with the paperwork.
Still, this does not mean every noun must take with. Established usage includes noun phrases after assist in, such as assist in the development of a plan.
Common Mistakes (and Quick Fixes)
Mistake: Treating assist with as the only correct form.
Fix: Both assist with and assist in are standard constructions.
Mistake: Treating assist in + -ing as the only possible pattern.
Fix: Assist with + -ing can also be grammatical.
Mistake: Assuming the preposition creates two completely different meanings.
Fix: The meanings often overlap. The main difference is usually emphasis and sentence structure.
Mistake: Writing assist to when a different construction is needed.
Fix: When describing help with a particular matter, assist with or assist in will often be the natural choice.
Everyday Examples
Here are natural examples showing the difference:
The receptionist assisted with appointment scheduling.
The receptionist assisted in scheduling appointments for new patients.
Our volunteers assisted with meal distribution.
Our volunteers assisted in distributing meals to families.
The manager assisted with the hiring process.
The manager assisted in reviewing applications.
I can assist with the presentation.
I can assist in preparing the presentation.
The technician assisted with the equipment setup.
The technician assisted in installing the new equipment.
These examples show why context matters. The choice does not depend on a single mechanical rule.
Dictionary-Style Word Details
Verb
assist with: A verb construction meaning to help with a particular task, matter, responsibility, or activity.
assist in: A verb construction meaning to help with or participate in an activity or process.
Assist itself can be transitive or intransitive:
The teacher assisted the student.
The teacher assisted in preparing the lesson.
Noun
Neither assist with nor assist in functions as a noun phrase by itself.
The noun assist does exist. In sports, it can refer to a play or action that helps a teammate score.
Synonyms
assist with: Closest plain alternatives include help with, support, and aid with, depending on context.
assist in: Closest plain alternatives include help with, support, aid, or contribute to, depending on the sentence.
These alternatives are not interchangeable in every grammatical structure.
Example Sentences
Assist with:
The staff will assist with registration.
Can you assist with the equipment?
Assist in:
The staff will assist in organizing registration.
She assisted in developing the new procedure.
Word History
Assist entered English through French from Latin assistere, meaning to stand by or be present to help. Modern English uses the verb broadly for giving help or support.
The history of the word does not establish a strict modern rule separating with from in.
Phrases Containing
Common patterns include:
- assist with a task
- assist with work
- assist with paperwork
- assist with a project
- assist in doing something
- assist in developing something
- assist in preparing something
- assist in the process
FAQs
Is “assist with” grammatically correct?
Yes, assist with is fully grammatical and common in American English. It is especially natural when you identify a task, responsibility, matter, or object that receives help. Examples include “assist with paperwork,” “assist with scheduling,” and “assist with the project.”
Is “assist in” grammatically correct?
Yes, assist in is also standard. It commonly introduces an activity or process, including an -ing form. For example, “assist in preparing the report” clearly describes helping with the preparation process rather than simply naming the report.
Can “assist with” and “assist in” be interchangeable?
Sometimes they can, because both can describe providing help. However, they may place attention on different parts of the situation. With often presents the matter being handled, while in can emphasize participation in an activity or process.
Should I use “assist in” before an -ing form?
You can. Assist in + -ing is a common and grammatical structure. For example, “She assisted in organizing the meeting” clearly describes her participation in the organizing activity. It is not a requirement, though, because other structures are also possible.
Can “assist with” be followed by an -ing form?
Yes. Assist with + -ing is grammatical when the activity is treated as the task being helped with. For example, “He assisted with preparing the materials” is possible. The wording may emphasize the practical task rather than participation in the whole process.
Which sounds more natural in American English?
Neither is universally more natural. The best choice depends on the sentence. Assist with works naturally for many specific tasks, while assist in works well for activities and processes. Both are established choices in American English.
Conclusion
Both assist with and assist in are correct.
Choose assist with when you want to focus on a task, matter, responsibility, or practical area of help. Choose assist in when you want to emphasize participation in an activity or process.
The distinction is useful, but it is not absolute. Both constructions can overlap, including before -ing forms. When the two choices are possible, use the one that makes the sentence clearest and most natural.
