You can pursue both. A recast and PMI removal are separate processes with separate rules, and nothing stops you from doing them together. The extra 10% principal payment plus a re-amortization is a recast request, and that goes to your servicer. Removing private mortgage insurance runs under the investor's cancellation rules (Fannie Mae's are straightforward to look up), and those rules can work differently when a large lump-sum paydown is involved, since a big payment can push you across the loan-to-value threshold faster than normal amortization would. The cleanest approach is one phone call that puts everything on the table. Tell your servicer plainly that you want to: - Make an additional 10% principal payment. - Have it treated as a recast so the payment re-amortizes. - Have the mortgage insurance removed. Then ask their specific process, order of operations, and requirements for each, including whether PMI removal uses your original value or requires a new appraisal, and what seasoning applies. Confirm the current criteria rather than assume, since PMI cancellation rules are guideline-driven and change. Sequencing matters here: doing the paydown and the PMI removal in the right order can save you an appraisal or speed up the cancellation.