How do I file married but separately??

[xmasbaby0]

It takes two accounts if you use online TurboTax..  Two separate returns and two fees.

If you were legally married at the end of 2017 your filing choices are married filing jointly or married filing separately.

Married Filing Jointly is usually better, even if one spouse had little or no income. When you file a joint return, you and your spouse will each receive the $4050 personal exemption, plus the married filing jointly standard deduction of $12,700 (add $1250 for each spouse over the age of 65).  You are eligible for more credits including education credits, earned income credit, child and dependent care credit, and a larger income limit to receive the child tax credit. 

If you choose to file married filing separately, both spouses have to file the same way—either you both itemize or you both use standard deduction. Your tax rate will be higher than on a joint return. Some of the special rules for filing separately include: you cannot get earned income credit, education credits, adoption credits, or deductions for student loan interest. A higher percent of your Social Security benefits may be taxable.  In many cases you will not be able to take the child and dependent care credit. The amount you can contribute to a retirement account will be affected. If you live in a community property state, you will be required to provide additional information regarding your spouse’s income. ( Community property states:  AZ, CA, ID, LA, NV, NM, TX, WA, WI) If  you are using online TurboTax to prepare your returns, you will need to prepare two separate returns and pay twice.

https://ttlc.intuit.com/questions/1894449-married-filing-jointly-vs-married-filing-separately

https://ttlc.intuit.com/questions/1901162-married-filing-separately-in-community-property-states

[karlajohns11]

If i have the downloaded version on my computer and want to change from Married filing jointly in 2020 to Married filing separate for 2022 what do I need to do?  

[RaifH]

If your import carried over the information from 2020, you will want to make sure you are listed as the primary taxpayer. Click on Edit next to your name and select Continue. Answer Do any of these apply to you? and Continue. After that, you can change to filing separately in the Were you Married? screen by answering No to Do you want to file this return together with your spouse?

If your spouse is the primary taxpayer on your imported return, you may be better off just starting with a fresh return for your married filing separately return. 

@karlajohns11