Use the equity in your home to finance the purchase of investments. Also, you can do a debt swap to transfer none tax-deductible debt to become tax deductible. Homefund cand lower your carrying costs and make your interest tax deductible. High-income homeowners tend to benefit more as they can cut their after-tax income close to half.
You may be also considering starting up a new business, or expand an existing one. Sometimes, the associated costs of business loan programs are fairly high. Benefit from lower carrying costs of a secured line of credit or mortgage, and write-off the interest costs against the taxable incomes.