Yes it does increase basis. There is no basis shown on an S Corp K-1, or on a 1065 K-1 for that matter. Tax basis capital on 1065 K-1s may or may not equal basis.

If the software is calculating shareholder or partner basis, I assume it would pick up this tax exempt income and add to basis, but I could be wrong. Haven't tested it yet. If it doesn't, I would input in the Other Increases to Basis line.