Due To vs Do To (and Due To vs Because Of)

Due to is the correct phrase when you mean "caused by" or "because of": The flight was delayed due to fog. Do to is not a phrase at all; it's simply the verb do followed by to, as in What did you do to your hair? If you're giving a reason, you always need due to.

The second question, due to versus because of, is subtler. A traditional rule says the two aren't interchangeable, and some editors still apply it. Modern usage has largely moved on, but knowing the rule will help you write cleanly and defend your choices. Both questions are covered below.

Quick answer: Due to = caused by / because of / expected to. Canceled due to rain. Do to = the verb do + to. What did the storm do to the roof? For the strictest readers, put due to after is/was and use because of elsewhere.

On this page

1. Part 1: Due To vs Do To
2. Part 2: Due To vs Because Of
3. Comparison Table
4. Cut the Clutter: "Due to the Fact That"
5. Other Expressions With "Due"
6. A Note on "Cancelled"
7. Example Sentences
8. US vs UK vs Australia
9. Common Mistakes
10. A Memory Trick That Works
11. Practice Quiz
12. The Practical Rule of Thumb

Part 1: Due To vs Do To

What "due" means

Due is an adjective with several related senses, all of which come from the idea of something owed:

1. Owed or payable: The rent is due on Friday.
2. Expected or scheduled: The baby is due in March. / The bus is due any minute.
3. Deserved or appropriate: with all due respect, in due course, give credit where it's due.
4. Caused by (with to): The accident was due to ice on the road.

The word goes back through Old French deu, the past participle of devoir ("to owe"), to Latin debere, the same root that gives us debt. So due to originally meant something like "owed to": the delay is owed to the fog, in the sense that the fog is responsible for it.

What "do to" means

Do to is just two separate words that happen to sit next to each other. Do is a verb, and to is a preposition introducing the person or thing affected:

• What have you done to the car?
• Don't do to others what you wouldn't want done to you.
• I can't believe what the heat does to my garden in January.
• What did they do to deserve this? (Here to begins an infinitive, to deserve.)

In each case, you could rewrite the sentence with another action verb (What have you changed on the car?) and to would still make sense. That's the sign of a real verb phrase.

The quick test

If you can replace the phrase with caused by, because of or expected to, write due to. If the sentence is about performing an action on someone or something, it's do to.

• The closure was ___ flooding. → caused by flooding works → due to.
• What did the flood ___ the bridge? → caused by the bridge is nonsense → do to.

Pronunciation and why the mix-up happens

Do is pronounced DOO everywhere. Due varies:

• In most American English, due is also DOO, so due to and do to sound identical.
• In British and Australian English, many people say DYOO, and many others say JOO (the same sound that starts June). Either way, it differs from do.

That pronunciation gap explains why do to as a misspelling shows up most often among writers whose accent makes the two identical. If you say DOO for both, the spelling can't rely on your ear.

Part 2: Due To vs Because Of

Once you've got the spelling right, a second question arises: is it OK to use due to to mean because of? The short answer is yes in most modern writing. The longer answer involves a rule that dominated usage guides for much of the twentieth century.

The traditional rule

The rule says due is an adjective, so due to should behave like an adjective phrase. That means it should:

• follow a linking verb such as is, was, seems or became, or
• directly describe a noun.

Under this rule, these sentences are fine:

• The cancellation was due to low ticket sales. (due to follows was and describes cancellation)
• Losses due to theft rose last year. (due to theft describes losses)

But this one is considered faulty:

• The concert was canceled due to low ticket sales.

Why? Because here due to is explaining why the concert was canceled, so it's modifying the verb canceled. Traditionalists insisted that only adverbial phrases like because of or owing to should do that job:

• The concert was canceled because of low ticket sales.
• Owing to low ticket sales, the concert was canceled.

What modern guides say

Language changed despite the rule. Due to in the sense of "because of" has been used by respected writers for a long time, and today most major dictionaries record it as standard English. Many usage experts now describe the old objection as a superstition that's lost its force.

That said, opinion isn't unanimous. Some editors, teachers and exam markers still prefer the traditional distinction, especially in formal or academic prose. So the practical advice is:

• In everyday, business and news writing, due to meaning "because of" is acceptable.
• In formal writing for a conservative audience, or if you simply want to avoid any criticism, use because of or owing to when you're modifying a verb, and keep due to after is/was.

This kind of split between strict and relaxed usage also appears with pairs like less and fewer, where everyday speech and formal grammar don't always agree.

Comparison Table

Cut the Clutter: "Due to the Fact That"

Due to the fact that is grammatical, but it's five words doing the job of one. Plain-language editors nearly always swap it for because:

• Wordy: Due to the fact that the server was down, orders were lost.
• Better: Because the server was down, orders were lost.

The same goes for owing to the fact that and in view of the fact that. If you're trimming a report or an email, these phrases are an easy first target.

Other Expressions With "Due"

Due turns up in plenty of fixed phrases, and the do misspelling creeps into all of them. Each of these always uses due:

• In due course – at the appropriate time, eventually: You'll receive your results in due course.
• With all due respect – a polite (sometimes not so polite) way to introduce disagreement.
• Due diligence – careful research before a decision, especially in business and law: The buyers carried out due diligence before the takeover.
• Pay your dues – earn your place through hard work or experience. Here dues is a plural noun meaning fees or obligations, as in union dues.
• Overdue – late; past the time when something was expected: an overdue library book, an overdue apology.
• Due date – the deadline for a payment or assignment, or the expected birth date of a baby.
• Credit where credit is due – praise that someone has earned.

None of these can be written with do. Pay your do's is a pun at best, and with all do respect is a common error in online comments.

A Note on "Cancelled"

You'll notice that many example sentences with due to involve something being called off. In those sentences, American writers usually spell the past tense canceled, while British and Australian writers use cancelled. Both are correct in their own regions; see cancelled vs canceled for the full story. This page uses whichever spelling suits the setting of each example.

Example Sentences

Everyday

1. School was closed due to snow, so the kids spent the day sledging.
2. What did you do to the TV remote? None of the buttons work.
3. Our order from the bakery in Hobart is due to arrive at noon.
4. The picnic was called off because of the forecast.
5. I don't know what the dentist did to my tooth, but it feels much better.
6. My library books are due back on Thursday.

Workplace and email

7. "The update has been postponed due to unexpected testing issues."
8. "The delay was due to a supplier error, not anything on our side."
9. "Owing to high demand, response times may be longer than usual."
10. "Please remember that timesheets are due by 5 p.m. Friday."
11. "We need to talk about what the new policy will do to staff morale."
12. "Because of the public holiday, the office in Manchester will close early."

Academic

13. The decline in bird numbers was largely due to habitat loss.
14. Errors due to rounding were corrected in the final table.
15. Participants withdrew because of scheduling conflicts.
16. The paper examines what prolonged drought does to soil structure.
17. The second edition is due to be released next spring.

News style

18. Flights out of Sydney were grounded due to severe thunderstorms.
19. Police said the crash was due to a mechanical fault.
20. The council's decision is due to be announced on Monday.
21. The match in Cleveland was suspended because of lightning.
22. Residents are angry about what the new highway will do to their neighborhood.
23. Owing to industrial action, rail services across the north of England will be reduced.
24. The minister, due to retire next year, said the decision was overdue.

US vs UK vs Australia

Spelling and meaning are identical in all three countries: due to for reasons and timings, do to only as verb plus preposition.

Pronunciation is the big difference. Most Americans pronounce due and do the same (DOO), which makes the do to misspelling more tempting. Many British and Australian speakers say DYOO or JOO for due, which separates it from do.

Owing to is used in all three varieties, but it feels more natural and common in British and Australian English, where you'll often hear it in official announcements (owing to a signal failure). Americans tend to choose because of or due to instead.

The traditional rule about due to is discussed in American and British usage guides alike. Neither country treats it as an iron law anymore, but you may meet teachers and editors in any of the three countries who still apply it, particularly in formal writing.

Common Mistakes

❌ The game was postponed do to rain. ✅ The game was postponed due to rain.

❌ Do to the strike, there are no trains today. ✅ Because of the strike, there are no trains today. (Due to is also widely accepted here.)

❌ What did you due to my phone? ✅ What did you do to my phone?

❌ The plane is do to land at 9:40. ✅ The plane is due to land at 9:40.

❌ Due to the fact that we were late, we missed the start. ✅ Because we were late, we missed the start.

❌ The rent is do on the first of the month. ✅ The rent is due on the first of the month.

Like affect and effect, these are words that sound close enough to blur but do completely different grammatical jobs.

A Memory Trick That Works

Due has a U, like a "you owe" bill. Due is about what's owed, expected or caused, just as a bill that's due is something you owe. If your sentence is about reasons, deadlines or expectations, choose the word with the U.

Do is a doing word: something you do. If someone is actually doing something to something, write do to.

For the because of question, try the swap: if caused by fits, due to is safe for every reader. If only because of fits, because of is the cautious choice.

Practice Quiz

Choose the best option for each sentence.

1. The festival was cancelled ______ the bushfire risk. (do to / due to)
2. What did the kids ______ the couch? It's covered in paint. (do to / due to)
3. The assignment is ______ submitted by Friday. (due to be / do to be)
4. The shortage was ______ a fault at the factory. (due to / do to)
5. For a strict formal style: "We missed the connection ______ a late train." (due to / because of)
6. Make this concise: "______ it was raining, we stayed in." (Due to the fact that / Because)

Answers

1. due to – Gives the reason; caused by the bushfire risk fits.
2. do to – The kids performed an action on the couch.
3. due to be – Due here means expected or scheduled.
4. due to – Follows was and means caused by, correct even under the strict rule.
5. because of – It modifies the verb missed, so traditionalists prefer because of.
6. Because – Same meaning, four fewer words.

The Practical Rule of Thumb

Reasons, deadlines and expectations get due to, never do to. For everyday writing, due to in the sense of "because of" is fine; for your most formal work, place due to after is or was and reach for because of everywhere else. And whenever you catch yourself typing due to the fact that, replace it with because and enjoy the shorter sentence.