I had to take a nonqualified distribution from my Roth IRA in 2018 due to emergency circumstances. I'm a bit confused how to figure out my tax liability (if any) on Part III.

My Line 22 basis is about $30,000 (total contributions since around 2007). The early distribution I took in 2018 was $2,000. I contributed $1,050 to the IRA in 2018.

Is my tax liability therefore $950? What if I were to contribute $950 before the end of the tax year? Would that eliminate any tax liability?

Thanks so much.