Higher mortgage rates reduce the number of financed buyers in the market, which gives cash buyers a significant competitive advantage. With fewer buyers competing for the same homes, cash offers face less competition and sellers are more motivated to accept them.
When rates are low, financed buyers flood the market. More competition means more bidding wars, and cash offers still win, but the premium they pay is higher. Cash buyers benefit from low rates too because their opportunity cost of deploying cash is lower when safe investments yield less.
The net effect is that cash buyers always have an advantage, but that advantage is largest when rates are high and financed buyers are scarce.
Related Questions
More answers are on the way.

Patrick Kevin Fagan
Loan Officer and Realtor, AXEN Realty LLC
Cash Buyer or Financing Your Home?
Patrick can help you decide which approach fits your financial situation best.