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
per invoice
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "per invoice" is correct and usable in written English.
It is typically used in financial or business contexts to indicate that something is calculated or charged for each individual invoice. Example: "The service fee will be charged at a rate of $50 per invoice submitted."
✓ Grammatically correct
News & Media
Formal & Business
Science
Academia
Wiki
Alternative expressions(5)
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
9 human-written examples
Making payroll is no longer his responsibility, but from day one as chief financial officer of Square Earth, he had a systematic, methodical, nearly obsessive strategy for collecting his receivables, which ranged from $50,000 to $300,000 per invoice.
News & Media
You now have a cost per invoice.
News & Media
With no upfront cost, the company only charges per invoice.
News & Media
Arex charges 0.25percentnt per invoice financed.
News & Media
Symple charges $4 per invoice, but waves fees for the first six months to boost growth.
News & Media
The scenario facing businesses right now is 12/13 euro per invoice for existing systems.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
51 human-written examples
The subscription economy is heating up as business-to-business (B2B) companies chase precious reoccurring revenue from more frequent, often per-user invoicing.
News & Media
The service has in introductory price of $1.09 per US invoice with bulk discounts.
News & Media
9 Average cost per unit (i.e. per ride, as invoiced by a typical Ambulance service) = € 57.00.
Science
Best regards [XXXXXXXXXXXX] <image001.gif> De : AK [mailto:[email protected]] Envoyé : jeudi 29 septembre 2011 12 25 À : [XXXXXXXXXXXX] / Van Der straeten Objet : Re: Van der Straeten Dear [XXXXXXXXXXXX] I fear that I will never receive the samples from you and so I have decided to go ahead with the order as per your invoices in July.
News & Media
Although the deviation is important, and it is a limitation of the study, we cannot analyse in detail these unfilled prescriptions because the real cost per person invoiced to the health system is not available.
Science
Expert writing Tips
Best practice
When discussing pricing models, clearly state what the "per invoice" charge includes to avoid ambiguity. For example, specify if it covers processing fees or support.
Common error
Avoid assuming that the "per invoice" cost accurately reflects the actual resource consumption. Understand that it is a simplified metric and might not capture the full complexity of cost allocation.
Source & Trust
83%
Authority and reliability
4.4/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "per invoice" functions as an adverbial phrase, modifying a verb or noun phrase to indicate a rate, cost, or calculation applied to each individual invoice. Ludwig AI confirms this through numerous examples.
Frequent in
News & Media
45%
Formal & Business
25%
Academia
15%
Less common in
Science
10%
Wiki
5%
Reference
0%
Ludwig's WRAP-UP
The phrase "per invoice" is a common term, as confirmed by Ludwig AI, used primarily in business and financial contexts to denote costs, charges, or calculations applied to each individual invoice. While grammatically correct and widely understood, its meaning should be clearly defined to avoid misinterpretations. It appears most frequently in News & Media and Formal & Business contexts. To enhance clarity, consider alternatives such as "for each invoice" or "invoice by invoice", depending on the specific context. Be aware that using the metric "per invoice" might oversimplify the allocation of resources.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
for each invoice
Replaces "per" with "for each", emphasizing individual invoices.
per bill
Uses the synonym "bill" instead of "invoice".
invoice by invoice
Highlights the iterative nature of applying something to each invoice.
by individual invoice
Emphasizes the specific and separate nature of each invoice.
on an invoice basis
Shifts the focus to the method of invoicing.
for every issued invoice
Adds clarity about when the invoice is officially created.
per itemized bill
Specifies a detailed bill.
with every invoice
Implies an action that accompanies each invoice.
based on invoice
Focuses on the invoice as the foundation for calculation.
for every billing cycle
Indicates a cost applied for each billing period, broader than a single invoice.
FAQs
How to use "per invoice" in a sentence?
You can use "per invoice" to describe costs, fees, or charges associated with each invoice. For example: "Our accounting software charges a small fee "for each invoice" processed".
What can I say instead of "per invoice"?
Alternatives include "for each invoice", "invoice by invoice", or "on an invoice basis", depending on the nuance you want to convey.
Which is correct, "per invoice" or "for invoice"?
"Per invoice" is the correct and more common way to express "for each invoice". "For invoice" is grammatically incorrect in this context.
What's the difference between "per invoice" and "per transaction"?
"Per invoice" refers specifically to charges related to an invoice, whereas "per transaction" refers to charges related to any transaction, which could include payments not tied to an invoice.
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
83%
Authority and reliability
4.4/5
Expert rating
Real-world application tested