The Tidemark Federal Credit Union is a mortgage from Tidemark Federal Credit Union. The ongoing APR is Interest rate as low as 6.875% (30 year), 6.625% (20 year), 6.125% (15 year); APR as low as 6.944%, 6.715%, 6.236% (rates as of October 17, 2026; displayed rates include discount points). Loan terms: Available in 15-, 20-, and 30-year terms.