Do to or due to: which one is correct?

Do to or due to? Use due to when you mean “because of”: The flight was delayed due to fog. Use do to only when do is a verb and to starts a new phrase: What can we do to help? When you are giving a cause, the answer is due to.

Both phrases sound the same in most American speech, which is why the mistake is so common.

Do to or due to: the rule in one minute

Due to is a two-word preposition that means “because of.” It introduces the cause of something: The match was canceled due to rain. Do to is two separate words. Do is a verb, and to starts either a prepositional phrase or an infinitive: What did the rain do to the pitch? and What can we do to help?

A spell checker underlines a slip like genious instead of genius, but it leaves do to alone because both words are real. The mistake stays in the draft until a person reads the sentence closely.

Two quick tests settle most sentences:

1. Swap in “because of.” If the sentence still works, write due to. “The match was canceled because of rain” works, so the answer is due to.
2. Swap in “did.” If the sentence still works, write do to. “What did the rain do to the pitch?” works, so the answer is do to.

Here are both tests on four sentences.

Sentence	Test that fits	Correct choice
The concert was postponed ___ a storm.	“because of a storm” works	due to
What can we ___ lower the cost?	“What did we do to lower the cost” works	do to
Her success was ___ steady practice.	“because of steady practice” works	due to
What will the heat ___ the paint?	“What did the heat do to the paint” works	do to

Most sentences pass one test and fail the other, so the choice becomes mechanical. A short memory line covers the rest: due to answers the question “why?” and do to answers the question “what?”

What due to means?

Merriam-Webster lists due to as a preposition meaning “because of” and dates that use to 1897. A noun phrase follows it: due to fog, due to the delay, due to high demand. A gerund works too: due to being late.

Due to turns up in three common positions:

• After a form of be: The cancellation was due to rain.
• At the end of a clause: The flight was delayed due to fog.
• At the start of a sentence: Due to fog, the flight was delayed. A comma follows the opening phrase.

All three appear in modern published writing. The first is accepted everywhere, and a later section covers how stricter editors treat the other two.

Pair due to with a noun that names a real cause: weather, illness, traffic, a shortage, a change in policy. The cause can be as short as one word, as in Her absence was due to the flu. If you write about attendance often, absence is another word that trips people up, and the guide to spelling absence correctly covers the usual slip.

Several phrases carry the same meaning and fit the same slots: because of, owing to, as a result of, on account of, and caused by. Each has its own tone, which the section on the old rule about due to explains.

Due as a word on its own?

On its own, due is an adjective with three common meanings. It can mean owed or payable: The rent is due on Friday. It can mean expected or scheduled: The baby is due in May. It can also mean proper or fitting, as in due care and in due course.

The scheduled meaning creates a second pattern with to: be due to plus a verb. The train is due to arrive at 6:15. Here due to means “expected to” and says nothing about cause. Do to never fits this pattern, so The train is do to arrive is always wrong.

Due dates bring their own word-choice traps. A report due every 2 years is biennial, and a report due twice a year is biannual. Writers swap those two often enough that the difference between biennial and biannual deserves its own check before you put a schedule in writing.

The remaining uses of due are fixed phrases: due process, due diligence, due date, in due time. None of them contains do.

When do to is correct

Do to is correct whenever do is a verb that stands on its own and to starts what follows. Two patterns cover nearly every case.

The first pattern is doing something to a person or thing. The verb changes form with the sentence (do, does, did, doing), and to introduces whatever receives the action:

• What did the storm do to the roof?
• Do to others as you would have them do to you.
• Nobody knew what the new rule would do to small shops.

Ask a groundskeeper what one careless golfer did to the fairway, and the answer is often a divot, a patch of turf torn loose by the club.

The second pattern is do plus an infinitive that gives a purpose:

• What can we do to help?
• There is little we can do to fix it.
• Tell me what I can do to make this right.

The verb can also appear as done or doing, and the same logic holds. What have I done to deserve this? and Doing that to a fresh coat of paint will leave marks both use a form of do followed by to. Due never changes form, so there is no dued to, dues to, or doing to that means because of. If the word before to can change into did, does, done, or doing, you are looking at the verb.

In both patterns the “did” test works, because do is an ordinary verb that changes form: What did we do to help? The “because of” test fails in both, because none of these sentences gives a cause. “What did the storm because of the roof” is not a sentence.

That failure is useful. If a sentence names an action and what happened to something, do to is the right pair. If it names a reason, due to is.

Why do and due get mixed up?

Sound causes most of the confusion. In most American speech, do and due are pronounced the same. Many British speakers add a y-like sound to due, so it comes out closer to “dyoo,” and some say it closer to “joo.” Even with that difference, the phrase blends into one unit in fast speech, and a writer can spell it from sound alone.

Three other factors make the error easy to repeat:

• Both words are real, so no spell checker flags either one.
• Both words are among the most common in English, so the hand types them without a pause.
• The two letters that differ sit in the middle of a short word, which makes the slip easy to miss on a second read.

Pronunciation misleads in both directions. Do and due look different on the page and sound alike, while ether and either look almost the same on the page and sound different.

A mental picture helps with the spelling. A result is owed to its cause, and due is the word for owed. When you write about a result and its cause, due is the word that carries the link between them.

Do to in texts and informal writing

Texts, chats, and social posts invite the mistake. People type fast, autocorrect accepts both spellings, and voice dictation hears the same sound for both and can pick the wrong one.

Example: cant make it do to traffic should read can’t make it due to traffic.

Here is a version from a work email. Example: Our reply will be late do to the system outage. The corrected line is Our reply will be late due to the system outage. One letter changes the phrase from a verb plus a preposition into a clear statement of cause.

Close friends read past the slip. Readers of work emails, cover letters, school assignments, and customer messages tend to notice it, and a small error in the first line can color how the rest is read.

Slang that starts in speech often settles on more than one accepted spelling, as the two forms of boujee and bougie show. Due to has no such variant. Only due to means “because of,” so a typed “do to” in that sense always needs fixing.

Casual writers have an easy way around the problem. Many skip the phrase and write “because” or “bc,” which needs no choice between do and due at all. In anything more formal than a text, due to and because of both fit.

The old rule about due to, because of, and owing to

Some editors and teachers still follow a traditional rule. Under it, due is an adjective, so due to should attach to a noun. The delay was due to fog passes, because due to describes the delay. The flight was delayed due to fog fails, because due to attaches to the verb.

Merriam-Webster takes a different view. Its usage note says the objection to due to as a preposition continues disagreements from the 18th century over due and owing, and it finds no solid reason to avoid the phrase. The American Heritage Dictionary reports a shift in its Usage Panel: in 1966, 84 percent rejected a sentence where due to modified a verb, and in 2017, 87 percent accepted one.

That leaves a practical choice:

• After be, due to is safe with every reader.
• Elsewhere, major dictionaries accept it, so it is standard English.
• If your editor, teacher, or style guide still follows the old rule, use because of and the question disappears.

Because of means “by reason of,” according to Merriam-Webster, and it has been in use since the 14th century. It works in every position, including the start of a sentence and the middle of a clause. Owing to dates from around 1625 and often reads as slightly more formal. The American Heritage Dictionary lists because of, on account of, and owing to as substitutes for due to.

Caused by and attributable to fit when you want to name a direct cause: The fire was caused by a faulty wire. Choosing the right form takes the same attention in other places too, such as picking the plural of leaf.

The same cause can be written four ways, and each one is correct:

• The match was canceled because of rain.
• The match was canceled owing to rain.
• The cancellation of the match was due to rain.
• Rain caused the match to be canceled.

The first reads most naturally in conversation. The second sounds a little more formal. The third follows the traditional rule, and the fourth puts the cause in the subject, which often gives the shortest sentence.

For formal and academic writing, the safest pattern is due to after be and because of everywhere else. Both are correct, and neither draws an objection.

Due to the fact that and do to the fact

Due to the fact that is grammatical, because “the fact that” plus a clause works as a noun phrase. It is also wordy. One word does the same job.

• Due to the fact that the road was closed, we turned back.
• Because the road was closed, we turned back.

Since, as, and given that also work. Do to the fact is the same spelling slip as do to, with the same fix: due to the fact. Better still, cut the phrase and use because.

Phonetic slips like this follow a pattern. Writers spell what they hear, which is how a word like creator turns into creater in a fast draft. Short function phrases like due to the fact get the same treatment.

The same split shows up with “the.” Due to the storm, the ferry stayed in port gives a cause. What did the heat do to the cake? gives an action. In the second sentence, do to the is correct, and the “did” test confirms it.

A clause cannot follow due to directly. The delay was due to the road was closed mixes a preposition with a full clause. Three fixes work:

• The delay was because the road was closed.
• The delay was due to the road closure.
• The delay was due to the fact that the road was closed.

The second fix is shortest and keeps due to. The first uses a plain conjunction and avoids the problem completely.

Common mistakes and a quick check

Four mistakes cover most of what goes wrong with these phrases.

1. Do to for a cause. The meeting moved do to a conflict. The fix is due to.
2. Due to for an action. What can we due to help? The fix is do to.
3. A clause after due to. Sales dropped due to customers stopped buying. The fix is because or a noun phrase: due to falling demand.
4. A cause nobody can identify. Sales fell due to it. The reader asks what “it” is. Sales fell due to the price increase gives them something to use.

Look-alike and sound-alike words call for a deliberate second pass over a draft, whether the pair is do and due or angel and angle. Reading a sentence aloud once, slowly, catches most of them.

Quick check

Choose due to or do to for each blank. For the last two, pick the better fix.

1. The concert was postponed ___ a storm.
2. What did the heat ___ the chocolate?
3. She missed class ___ a fever.
4. There is nothing more we can ___ fix it.
5. The delay was due to the road was closed. Rewrite it.
6. We will have to make ___ with one chair.

Answers: 1. due to. 2. do to. 3. due to. 4. do to. 5. The delay was because the road was closed, or The delay was due to the road closure. 6. The blank takes do alone, so the idiom is make do.

Frequently asked questions

Is it make do or make due?

Make do. Usage guides treat make do as the standard form in edited writing, and make due reads as an error to many readers. The idiom is short for make something do well enough, where do means to serve a purpose.

Is it due out or do out?

Due out means expected to be released: The album is due out in March. Do out appears in the phrase do someone out of something, which means to cheat them of it.

Does due to need a comma?

At the start of a sentence, put a comma after the opening phrase: Due to fog, the flight was delayed. At the end of a sentence, skip it: The flight was delayed due to fog.

What is the fastest way to check a finished draft?

Search the draft for “do to” and read each hit with the “did” test. Every hit that names a reason needs to become due to. The same search habit works for other sound-alike pairs, such as homey and homie.