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
a fixed sum
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a fixed sum" is correct and usable in written English.
It can be used when referring to a specific, unchanging amount of money or value. Example: "The contract stipulates that the payment will be made in a fixed sum at the end of the project."
✓ Grammatically correct
News & Media
Academia
Encyclopedias
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
60 human-written examples
They are a fixed sum.
A debtor contracts to pay a fixed sum in interest every year.
News & Media
Kelly is expected to say that the payment should be a fixed sum.
News & Media
But it depends on a "composition agreement" under which creditors accept a fixed sum.
News & Media
But rates have a big impact on charitable remainder annuity trusts, which pay a fixed sum to the donor.
News & Media
Under the new system, starting in 2020 Washington would pay the states only a fixed sum for each enrollee.
News & Media
It's hard to compete on price, Keck argues, when most of your customers know they'll pay a fixed sum.
News & Media
It commits the auction house to pay the would-be vendor a fixed sum, generally set slightly below the low estimate, whether or not the item sells.
News & Media
Examples could be a decorator agreeing to paint a house for a set fee or a courier agreeing to deliver something for a fixed sum.
News & Media
In another study, participants played the role of allocator in a so-called "ultimatum game". The allocator had to divide a fixed sum between himself and another party.
Academia
Previously in the Sāsānian empire taxes had been levied on the yield of land; Khosrow established a fixed sum rather than a yearly variation.
Encyclopedias
Expert writing Tips
Best practice
When using "a fixed sum", ensure the context clearly indicates what the sum refers to, especially when dealing with financial or contractual agreements. State the currency or unit of measure for clarity.
Common error
Avoid assuming that "a fixed sum" automatically implies a large amount. The phrase only indicates a specific, unchanging quantity, regardless of its magnitude.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a fixed sum" primarily functions as a noun phrase, often serving as the object of a verb or preposition. It denotes a specific and unchanging amount, frequently in financial or contractual contexts. Ludwig examples highlight its usage in describing payments and allocations.
Frequent in
News & Media
39%
Academia
21%
Encyclopedias
7%
Less common in
Science
15%
Formal & Business
3%
Wiki
0%
Ludwig's WRAP-UP
In summary, "a fixed sum" is a commonly used noun phrase that refers to a specific and unchanging amount. As Ludwig AI confirms, the phrase is grammatically sound and appears frequently in news, academic, and encyclopedia sources. To ensure clarity, always specify the units (e.g., currency) when using this phrase. While "a fixed sum" indicates a set quantity, it does not inherently imply the amount is large, and it differs from ""a lump sum"", which denotes a one-time payment. Understanding these nuances will help you use the phrase effectively and avoid misinterpretations.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a set amount
This alternative is more general and can apply to various contexts, not just monetary ones.
a predetermined amount
Emphasizes the prior establishment of the amount, highlighting the planning aspect.
a specific sum
Focuses on the distinct and particular nature of the sum.
a defined quantity
Broadens the concept to include non-monetary items, focusing on the precise measurement.
a stipulated amount
Highlights the contractual or agreed-upon nature of the sum.
a constant sum
Focuses on the unchanging nature of the amount over time or across different situations.
a guaranteed amount
Emphasizes the security and assurance associated with receiving that particular sum.
a lump sum
Implies a single payment rather than recurring installments.
a settled amount
Suggests that the amount has been agreed upon after negotiation or discussion.
a known quantity
Shifts the focus to the certainty and predictability of the amount.
FAQs
How can I use "a fixed sum" in a sentence?
You can use "a fixed sum" to describe payments, budgets, or allocations. For example: "The government provides each state "a fixed sum" to run its welfare program".
What are some alternatives to saying "a fixed sum"?
Depending on the context, you can use alternatives like "a set amount", "a predetermined amount", or "a specific sum".
Is it correct to say "the fixed sum" instead of "a fixed sum"?
While both can be grammatically correct, "the fixed sum" implies that there's a specific, already-identified sum, whereas "a fixed sum" introduces the idea of a defined amount for the first time.
What's the difference between "a fixed sum" and "a lump sum"?
"A fixed sum" refers to a specific, unchanging amount, while "a lump sum" specifically means a single payment made at one time, rather than in installments.
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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested