The Problem With 70 to 80%: What Retirees Really Need to See

Why can a single percentage mislead?

The familiar range begins with earnings. Social Security’s current benefits guide says many financial advisers estimate that retirees may need about 70% to 80% of pre-retirement income from Social Security, investments, and savings.^[1] That can be useful before the household details are assembled.

Households with similar earnings can carry very different housing costs, family commitments, and plans for their time. Work expenses and retirement-plan contributions may end. Travel may grow. Healthcare premiums may become more prominent.

The percentage also depends on its definition. The OECD defines a gross pension replacement rate as pension entitlement relative to individual earnings. Under its baseline assumptions, final earnings equal revalued lifetime average earnings.^[2] The result summarizes a set of assumptions. It does not reveal the household experience those assumptions are meant to fund.

What should a retirement spending plan show?

Begin with the costs that keep daily life working. Housing and utilities may belong in this group. Food, transportation, and insurance may belong there as well. Then separate priorities with more room to change, such as travel or gifts. These categories do not label one expense as important and another as optional. They show where a household may have room to adapt if circumstances change.

Healthcare and taxes deserve their own assumptions because they respond to different rules. Expected income can then be placed beside the spending map. Social Security or a pension may support part of the household costs. Portfolio withdrawals may need to provide the remainder.

What does the household map add?

The percentage remains outside the map as a first-pass check. The planning work moves inward, toward the life the household expects and the costs that support it. Funding sources are then tested against that household-specific picture.

Why do healthcare and taxes need separate attention?

Fidelity’s 2025 estimate says a 65-year-old retiring that year may need $172,500 in after-tax savings for healthcare expenses during retirement. Actual costs depend on health and longevity. Location, coverage, and the accounts used to pay may also affect the amount.^[3]

Medicare income-related premium adjustments generally use tax-return information from two years earlier.^[4] A portfolio withdrawal that supplies spending money today can therefore affect taxes and a later Medicare premium year. Showing these costs separately makes the timing easier to examine.

How should income sources support the spending plan?

The plan can show which expected income supports ongoing household costs and which resources may fund more adaptable priorities. Social Security benefits are based on lifetime earnings, and the monthly amount depends partly on when benefits begin.^[1] Pension terms vary. Portfolio withdrawals can produce different after-tax amounts depending on the account used.

This structure also helps a household see where changes may be possible. A larger travel year may require a different withdrawal pattern. A move may change the ongoing cost base. For broader context, Retirement Income Planning explains how income sources, taxes, and money intended for later can be considered together.

How can the estimate remain useful over time?

Research on the “retirement spending smile” found that inflation-adjusted spending often declined through mid-retirement and could rise later.^[5][6] A household may follow a different path. Travel can slow while health needs rise, or a family commitment can add a new expense.

Use 70% to 80% as an early reasonableness check. Then replace the shortcut with recent spending records and household expectations. Add separate healthcare and tax assumptions. Place the income each source may provide beside those needs.

Revisit the map when work ends or housing changes. A change in health needs or family commitments may also call for a new look.

The result is a spending plan grounded in the life you expect to live. It also shows which assumptions deserve another look as that life changes.

Related Reading: What Can We Actually Spend in Retirement? It shows how a spending number becomes more useful when the household can see what it needs to cover.