It is almost always best from a tax standpoint to file as Married Filing Jointly versus Married Filing Separately.
You receive the highest Standard Deduction of $24,400 if both of you are under age 65. So the first $24,400 of your joint income is tax free.
Your tax bracket is also different when filing jointly
12% 0 - $19,400
22% $19,401 - $78,950
Filing Separately
12% 0 - $9,700
22% $9,701 - $39,475
24% $39,476 - $84,200
See this TurboTax support FAQ for filing jointly versus separately - https://ttlc.intuit.com/community/married/help/is-it-better-for-a-married-couple-to-file-jointly-or-...
