Use the serial (or Oxford) comma: Include a comma before the conjunction in a series of three or more.


Track your income, pay bills, or run payroll.
Rely on TurboTax to get your deductions, credits, and more.

Other countries and languages have different guidelines for the Oxford comma. Work with regional content designers to make sure we get it right.

Commas in dates

Don’t use commas for only the month and year or the month and day.


January 2018 was a busy month.

Use a comma after the year when starting a phrase or clause with a date.


On April 15, 2015, he was living in Los Angeles.

Use commas when writing the month, day, and year.


Your taxes are due April 15, 2020.

Commas with conjunctions

Use a comma between two clauses that can stand alone and are linked by a conjunction.


I like using TurboTax to do my taxes, because it’s easy to use.

You can use “then” as a coordinating conjunction (even though technically it’s not) when it makes the sentence a quicker read.


Go to the store, then go to the bank.

Note: Compound sentences tend to be longer and add a layer of complexity. Don’t overdo them.

Don’t use a comma with a single subject and two verbs. It creates an awkward pause and just looks weird.


You can create purchase orders and adjust inventory items.

Commas with salutations or greetings

After a salutation or direct address, use a comma.


Hello, Tom.

But if the salutation is a simple “Hi,” omit the comma.


Hi Tom.

Note: This guideline is helpful to remember in emails and conversational interfaces.