The housing allowance is exempt from income tax but it is still subject to self-employment tax, about 15%.
Normally as a common law employee, you would receive a W-2 even though the church does not withhold taxes. However, if your only compensation is a housing allowance, you probably won't get a W-2, and even if you did, you can't e-file if your W-2 has zero for the box 1 wages.
So you will need to report the income as if you were self-employed, on a schedule C. Use job code 813000, this will cause turbotax to ask you about the value of your housing allowance. You won't have a 1099-MISC for taxable income, but you might have other cash income not on a 1099-MISC to report, if you got paid extra for weddings, funerals, etc. Turbotax will create a schedule SE for the self-employment tax.
Because your pastor's compensation is exempt from income tax, you can't deduct any work-related expenses like mileage or supplies, due to the "Deason rule".
See this for more. http://www.ecfa.org/PDF/2016-Preparing-Tax-Returns-For-Clergy.pdf
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