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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
payment is obligatory
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "payment is obligatory" is correct and usable in written English.
You can use it in contexts where you want to emphasize that payment must be made, such as in contracts, invoices, or terms of service. Example: "Please note that payment is obligatory before the service can be rendered."
✓ Grammatically correct
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
Since the parents' rental payments are obligatory, they're not counted as taxable gifts, he explains.
News & Media
Half board is obligatory.
News & Media
There is obligatory scatology.
News & Media
Indeed, it is obligatory.
News & Media
The "by all accounts" is obligatory.
News & Media
Expertise of international standards is obligatory.
A society where wellness is obligatory is a sick one.
News & Media
In this sort of film, unfortunately, a plot is obligatory.
News & Media
Gliding locomotion is obligatory for infectivity of sporozoites10, 41.
Science & Research
Creativity is obligatory.
News & Media
Therefore, maintaining the construction standards is obligatory.
Expert writing Tips
Best practice
When stating payment terms, use "payment is obligatory" to clearly communicate that fulfilling the financial obligation is not optional. This leaves no room for ambiguity.
Common error
Avoid using "payment is obligatory unless..." as it introduces contradiction. If conditions exist that waive payment, it's no longer truly obligatory. Use conditional phrasing instead.
Source & Trust
60%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "payment is obligatory" functions as a declarative statement that emphasizes a required action. As Ludwig AI indicates, it clearly conveys that payment is not optional but rather a binding obligation.
Frequent in
Science
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News & Media
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Formal & Business
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Less common in
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Ludwig's WRAP-UP
The phrase "payment is obligatory" serves to express that fulfilling a monetary responsibility is a strict requirement. While grammatically sound, Ludwig AI shows its usage is limited. More common alternatives include "payment is required" or "payment is mandatory". The phrase is best suited for formal settings where clarity is key. When writing, ensure that the context doesn't introduce contradictions, such as conditional clauses that undermine the obligatory nature of the payment.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
payment is required
Replaces "obligatory" with "required", indicating a necessary action or condition.
payment is mandatory
Substitutes "obligatory" with "mandatory", conveying a sense of compulsion or regulation.
payment is a must
Uses a more emphatic and informal expression to highlight the necessity of payment.
payment must be made
Focuses on the action of making the payment, highlighting the responsibility of the payer.
payment is compulsory
Replaces "obligatory" with "compulsory", suggesting that payment is enforced by a rule or law.
payment is due
Indicates that payment is expected or scheduled at a specific time.
payment is necessary
Replaces "obligatory" with "necessary", emphasizing that payment is essential or indispensable.
payment is unavoidable
Highlights the certainty of payment, suggesting it cannot be escaped or prevented.
payment is expected
Implies that payment is anticipated or looked forward to, usually based on an agreement or understanding.
payment is ineluctable
Replaces "obligatory" with "ineluctable", an infrequently used term that means payment cannot be avoided.
FAQs
What does "payment is obligatory" mean?
The phrase "payment is obligatory" means that payment is required and not optional. It signifies a binding financial obligation that must be fulfilled.
What can I say instead of "payment is obligatory"?
You can use alternatives like "payment is required", "payment is mandatory", or "payment must be made" depending on the context.
Is it better to say "payment is obligatory" or "payment is required"?
Both "payment is obligatory" and "payment is required" are grammatically correct and convey a similar meaning. "Payment is required" is often preferred for its simplicity and broader appeal.
How to use "payment is obligatory" in a sentence?
You can use "payment is obligatory" in sentences such as: "Please note that payment is obligatory before the service can be rendered", or "According to the contract, payment is obligatory within 30 days of the invoice date."
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
60%
Authority and reliability
4.1/5
Expert rating
Real-world application tested