America's personal savings rate is abysmally low. Last year the personal savings rate was negative, the lowest annual rate since the Great Depression. Whether the objective is to promote retirement security, improve educational attainment, provide a financial cushion for life transitions, or increase national savings, the need to increase household savings is vitally clear. Public policy should take a cue from some innovative financial institutions that encourage connecting savings with the one activity that almost every household undertakes -- tax filing.