Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
that's another matter
Grammar usage guide and real-world examplesUSAGE SUMMARY
"that's another matter" is correct and can be used in written English
It is used to indicate that something is a separate issue and requires a different approach or discussion. For example: "I understand your opinion on the issue, but that's another matter altogether."
✓ Grammatically correct
News & Media
Alternative expressions(1)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
51 human-written examples
If the Muslim Brotherhood then undermines democratic values that's another matter, but that's assuming too much.
News & Media
But even though Gmail's native search is OK on the desktop, on phones, that's another matter.
News & Media
That's another matter entirely.
News & Media
Perhaps, but that's another matter.
News & Media
Well, that's another matter.
News & Media
Now that's another matter.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
9 human-written examples
But dread — that was another matter.
News & Media
For China and India, that is another matter.
News & Media
It's group situations that are another matter.
News & Media
As for his political future, that is another matter.
News & Media
As for progression and retention, that is another matter again.
News & Media
Expert writing Tips
Best practice
Use "that's another matter" to smoothly transition to a different but related topic. It signals to your audience that you acknowledge the connection but are deliberately shifting focus.
Common error
Don't use "that's another matter" as a dismissive tactic to avoid addressing a challenging question or counterargument. Ensure the shift is logical and adds value to the overall discussion rather than derailing it.
Source & Trust
91%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that's another matter" serves as a transitional device. It indicates a shift in focus to a related but distinct topic, acknowledging a connection while signaling a deliberate change in subject. Ludwig confirms its grammatical correctness.
Frequent in
News & Media
100%
Less common in
Formal & Business
0%
Science
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "that's another matter" is a common and grammatically correct phrase used to signal a shift to a different but related topic. It functions as a transitional device, allowing for a change in perspective or approach. According to Ludwig, its usage is versatile, fitting into both formal and informal contexts. While it's mostly found in News & Media, being mindful of the audience and choosing more formal alternatives for academic or business writing can enhance clarity and professionalism. The phrase is best used when you want to acknowledge a connection between topics but deliberately change the focus of the discussion.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that's a different story
Emphasizes the difference in narrative or circumstances.
that's a separate issue
Highlights the distinct nature of the topic being discussed.
that's a distinct concern
Highlights that the subject deserves its own independent attention.
that's a completely different subject
Signifies that it belongs to a separate category.
that's beside the point
Indicates that the matter is not relevant to the current discussion.
that's not the issue at hand
Focuses on the irrelevance of the topic to the present concern.
that's a horse of a different color
A more idiomatic way of saying it's a completely different situation.
that's a whole other ballgame
Implies a significant change in the nature of the situation.
that's another kettle of fish
Another idiomatic expression for a different and unrelated problem.
that's a matter for another day
Postpones the discussion for a later time.
FAQs
How can I use "that's another matter" in a sentence?
You can use "that's another matter" to indicate that something is a separate issue or topic. For example, "I understand your concerns about the budget, but project timelines "that's another matter" entirely."
What does "that's another matter" mean?
"That's another matter" means that something is a different issue or topic that needs to be considered separately.
What can I say instead of "that's another matter"?
You can use alternatives like "that's a different story", "that's a separate issue", or "that's beside the point" depending on the context.
Is it appropriate to use "that's another matter" in formal writing?
Yes, "that's another matter" is generally acceptable in both formal and informal writing, although more formal alternatives might be preferred in some contexts. Consider alternatives like "that's a separate issue" for a more formal tone.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
91%
Authority and reliability
4.6/5
Expert rating
Real-world application tested