The more you save in taxes, the more you can save for retirement. Tax-saving instruments, therefore, are a critical component of a retirement savings plan. Just as you invest in growth instruments, like mutual fund systematic investment plans (SIPs), you must also have guaranteed small-savings investment instruments in the portfolio to make it foolproof from market volatility, short-term economic upheavals, and even possible personal financial crises. Government pension schemes can help senior citizens save on taxes and accumulate a bigger corpus at retirement. Several tax-efficient savings instruments are available to ensure financial security at retirement, and here are some of them.