Wait until after June to buy short-term certificates of deposit (CDs).

When you push income into a later year, you delay the time when taxes on that income must be paid. If you buy a 6-month CD this June, the interest is taxable on this year’s return. If you wait until July to buy the CD, interest becomes taxable on the following year’s return. By waiting one more month for interest, you had an extra year before the tax was due.