“As per” and “per” often appear in business writing, legal language, reports, and everyday instructions. They look similar, but they do not behave the same way in every sentence.
Writers use them to show authority, rate, distribution, or reference. The difference matters because the wrong choice can make a sentence sound stiff, unclear, or less natural.
What “per” means in modern English
“Per” usually means “for each,” “according to,” or “by means of.” It is compact and widely accepted in formal and informal writing.
You see it in prices, measurements, rates, and instructions. Examples include “$5 per item,” “50 miles per hour,” and “per the schedule.”
It often works best when a sentence needs precision. In that role, it sounds efficient and direct.
Common uses of “per”
One major use is to show a unit rate. “The fee is $20 per person” means each person pays $20.
It also appears in instructions and policies. “Per company policy, badges must be visible” means the rule comes from the policy.
Another use is in formal references. “Per your request” means “according to your request,” though many writers now prefer simpler alternatives.
Examples of “per” in sentences
The contractor charges $75 per hour.
Attendance is limited to two guests per employee.
Per the manager’s note, the meeting starts at 9 a.m.
The shipment includes six units per box.
These examples show that “per” is short and functional. It works well when the relationship between words is mathematical, procedural, or source-based.
What “as per” means
“As per” means “according to” or “in accordance with.” It is common in formal writing, especially in office communication and legal or administrative contexts.
The phrase often introduces a source of instruction or agreement. For example, “As per the contract, payment is due on Friday” points to the contract as the authority.
It can sound more formal than “per” alone. In some contexts, that formality is useful; in others, it sounds dated or wordy.
Where “as per” fits best
Use it when you want to show that something follows a document, policy, or instruction. “As per our discussion, I have updated the file” is a clear example.
It is also common in correspondence. “As per your email, we have rescheduled the delivery” links the action to the email.
The phrase works best when the source matters. It tells the reader exactly where the instruction came from.
Examples of “as per” in sentences
As per the agreement, the landlord must give 30 days’ notice.
As per your instructions, the report includes the revised figures.
As per company policy, all devices must be checked in at reception.
As per the latest update, the launch has been moved to next week.
These examples show the phrase in action. It is useful, but it is not always the most natural choice.
The core difference between “as per” and “per”
The main difference is grammatical and stylistic. “Per” is shorter and more flexible, while “as per” is more explicitly formal and often more verbose.
“Per” can mean “for each” or “according to,” depending on context. “As per” usually means only “according to” or “in accordance with.”
That narrower meaning makes “as per” less versatile. It also makes it easier to replace with plainer language in many cases.
Meaning and tone
“Per” often sounds cleaner and more modern. “As per” can sound bureaucratic if it appears too often.
For example, “Per your request” and “As per your request” both work, but the first is shorter and more natural in many settings. The second may feel overly formal unless the context calls for it.
Tone matters because readers notice unnecessary formality. A sentence that is technically correct can still feel clumsy if it sounds inflated.
Precision versus style
“Per” is often the better choice when precision is the goal. It is especially strong in rates and instructions.
“As per” may be appropriate when you want to emphasize compliance with a source. That is why it appears often in legal, administrative, and corporate writing.
If the sentence does not need that extra emphasis, “per” or a simpler phrase may be better. Good style usually favors the clearest option.
When “per” is the better choice
Use “per” when you are talking about cost, distance, time, or quantity. These are the most natural and common settings for the word.
It is also useful in concise professional writing. Shorter phrasing often improves readability without losing meaning.
In many cases, “per” keeps the sentence active and direct. That is one reason it appears so often in charts, invoices, and schedules.
Rates and measurements
“Per” is the standard choice for rates. You would say “miles per gallon,” “pages per minute,” and “units per case.”
These expressions are fixed and widely recognized. Replacing “per” with “as per” would sound wrong or awkward in most of them.
It also works in comparisons that involve distribution. “Two slices per person” is clear and efficient.
Instructions and policy references
“Per” can also introduce a rule or source. “Per the handbook, employees must log overtime” is acceptable in formal writing.
This usage is common in workplace communication. It is shorter than “as per” and often reads more smoothly.
Still, some editors prefer “according to” in full sentences. That preference depends on audience and tone.
When “as per” is the better choice
Use “as per” when a document, agreement, or request is the focus of the sentence. The phrase makes the source of the action explicit.
It can be useful in formal updates and compliance language. “As per the safety memo, all exits must remain clear” leaves no doubt about the reference point.
It also helps when you want to keep a formal tone across a document. Some organizations use it consistently in internal memos and client communication.
Formal correspondence
In emails, “as per” often appears when someone is confirming that they followed instructions. “As per your request, I attached the revised file” is a common example.
This phrasing can sound polite and professional. It shows that the writer is responding directly to a prior message.
Even so, it should not be overused. Repeating it in every message can make the writing feel mechanical.
Legal and administrative language
“As per” appears frequently in legal and official documents. It helps connect an action to a rule, clause, or agreement.
For example, “As per Section 4, the tenant is responsible for repairs” clearly identifies the source of obligation. That clarity matters in formal records.
In these contexts, the phrase is often accepted because it matches the tone of the document. Precision and traceability are the priorities.
“As per” and “per” in business writing
Business writing often favors short, efficient language. That makes “per” a strong default and “as per” a more selective choice.
Many business sentences can be improved by replacing “as per” with “according to,” “based on,” or simply “per.” The best option depends on the exact sentence.
Readers usually prefer language that gets to the point quickly. That is especially true in emails, reports, and project updates.
Email examples
“Per our conversation, I have updated the timeline” sounds concise and professional.
“As per our conversation, I have updated the timeline” is correct, but it feels slightly heavier. In a fast-moving workplace, that extra weight may not help.
If the message is routine, shorter wording usually works better. If the message is formal, “as per” may fit the tone.
Reports and memos
Reports often benefit from “per” because it fits charts, notes, and summaries. “Revenue increased by 12% per quarter” is a natural example.
“As per the data” can work, but it may sound vague if the source is already obvious. Stronger writing names the source directly when needed.
For example, “According to the survey results, satisfaction rose” is clearer than a repeated “as per” pattern. That choice improves flow and reduces stiffness.
Common mistakes with “as per” and “per”
One common mistake is using “as per” in places where “per” is enough. The sentence may still be grammatical, but it can sound inflated.
Another mistake is using “per” where only “according to” makes sense. Context decides whether the phrase means a rate or a source.
Writers also sometimes mix the two in a way that weakens clarity. A careful rewrite usually fixes the problem fast.
Overly formal phrasing
“As per your advice, I will proceed” is understandable, but “Based on your advice, I will proceed” sounds more natural to many readers.
“As per the attached file, please review” is also awkward because the file is not the agent. A better version is “Please review the attached file.”
This issue matters because formal language should still feel readable. Clarity should come before ceremony.
Confusing rate with reference
“Per the meeting” can be unclear if you mean “according to the meeting notes.” The phrase needs a real source, not just a vague event.
Likewise, “as per hour” is incorrect if you are trying to state a rate. You would say “per hour” instead.
When in doubt, identify the relationship first. Then choose the word that matches that relationship.
Better alternatives in many sentences
Sometimes the best answer is neither phrase. Plain alternatives often improve style and readability.
“According to,” “based on,” “in line with,” and “for each” cover many of the same meanings. They often sound more natural in modern writing.
These options are especially useful when you want a sentence to feel less formal. They can also reduce repetition across a document.
Replacing “as per”
“As per your email, we changed the schedule” can become “According to your email, we changed the schedule.”
“As per the policy, masks are required” can become “According to the policy, masks are required” or “The policy requires masks.”
These rewrites often sound cleaner. They also remove a layer of formality that may not be needed.
Replacing “per”
“Per your request” can become “As you requested” or “At your request.”
“Per the rules” can become “According to the rules” if the context is not mathematical. This version is often easier for general readers.
“Per person” and “per unit” usually should stay as they are. Those are standard expressions and do not need replacement.
How to choose the right phrase
Start by asking what the sentence needs to express. If it is a rate, quantity, or distribution, “per” is usually the right choice.
If the sentence points to a document, request, or policy, “as per” may fit. Even then, a simpler alternative may be stronger.
Read the sentence aloud if you are unsure. The version that sounds less forced is usually the better one.
A quick decision method
Use “per” for rates, ratios, and short formal references. Use “as per” only when you want to stress that something follows a source.
If the sentence becomes wordy, replace both with a plainer phrase. That edit often improves the sentence immediately.
If the phrase appears in a business document, check whether it matches the document’s tone. Consistency matters more than habit.
Examples that show the difference clearly
“The charge is $10 per seat” describes a rate. “As per the invoice, the charge is $10” refers to the invoice as the source.
“We will ship three boxes per order” describes distribution. “As per your order, we will ship three boxes” refers to the order itself.
“Per the schedule, the train leaves at 7:15” is acceptable in formal writing. “As per the schedule, the train leaves at 7:15” is also correct, but heavier.
Side-by-side comparisons
Per the agreement, payment is due on Monday.
According to the agreement, payment is due on Monday.
As per the agreement, payment is due on Monday.
The second version is often the most natural. The first and third are more formal, with the third sounding the most dated in many contexts.
She earns $30 per hour.
She earns $30 as per hour.
She earns $30 according to hour.
Only the first sentence is correct. This shows that “per” can express a rate, while “as per” cannot replace it.
Style guidance for professional and SEO writing
In professional content, clarity usually matters more than sounding formal. Search engines also reward writing that is direct and easy to understand.
That means “per” and “as per” should be used with purpose, not habit. If a simpler phrase improves readability, choose it.
Editors often notice that repeated formal phrases weaken the rhythm of an article. Cleaner language tends to hold attention better.
Writing for a broad audience
If your readers include non-native English speakers, avoid unnecessary formality. “According to” is often easier to process than “as per.”
Short sentences help too. They make the relationship between words easier to see.
That is one reason plain language is effective in guides, help articles, and policy pages. It reduces the chance of misreading.
Writing for specialized contexts
In legal, compliance, and internal policy documents, “as per” may remain appropriate. The key is consistency within the document.
In technical writing, “per” is often better for units and rates. It keeps measurements standard and readable.
In marketing or blog content, simpler alternatives usually perform better. They sound more conversational and less rigid.
Practical takeaway for writers
Use “per” for rates, quantities, and compact formal references. Use “as per” when you need to point to a source in formal language.
When both are possible, choose the one that sounds most natural and least inflated. That choice usually improves clarity.
If a sentence feels awkward, rewrite it with “according to,” “based on,” or a direct verb. Good writing is not about using the most formal phrase available.