No capital or interest

For older borrowers (typically in retirement), it may be possible to arrange a mortgage where neither the capital nor interest is repaid. The interest is rolled up with the capital, increasing the debt each year.
These arrangements are variously called reverse mortgages, lifetime mortgages or equity release mortgages, depending on the country. The loans are typically not repaid until the borrowers die, hence the age restriction. For further details, see equity release.