I'd say in 99% of circumstances absent a qualifying dependent for one of you where one of you could file head of household, it makes the most sense financially to file jointly. You could always fill out the W-4 and indicate you file jointly without checking the box for multiple jobs and see what happens. Another great tool to use would be the IRS Withholding estimator which will inform you exactly what to do with your W-4 forms: https://www.irs.gov/individuals/tax-withholding-estimator
