Retirement planning can feel complicated because the financial world is filled with rules, acronyms, tax consequences, and competing advice. But underneath all of that complexity are a handful of decisions that have an enormous impact on whether your retirement feels financially secure.

For most people approaching retirement, the goal isn't to become a financial expert. It's to understand the major decisions well enough to ask good questions, recognize trade-offs, and avoid expensive mistakes.

Here are 10 financial decisions every American approaching retirement should understand.

1. When Should I Claim Social Security?

Social Security may become one of the most important sources of guaranteed income you'll have in retirement. You can generally begin retirement benefits as early as age 62, but claiming before your full retirement age permanently reduces your monthly benefit. Waiting beyond full retirement age increases your benefit until age 70.

The decision isn't simply, "How soon can I collect?" A better question is, "When does claiming Social Security make the most sense as part of my entire retirement plan?"

Your health, life expectancy, employment income, savings, marital status, and spouse's Social Security benefit can all influence the decision. For married couples, coordinating benefits can be especially important because the higher earner's benefit may eventually affect the survivor's income.

Example: Suppose your benefit at full retirement age is $2,500 per month. Claiming at 62 would give you a smaller monthly benefit, while waiting until 70 could produce a substantially larger check for the remainder of your life. If you live well into your 80s or 90s, that larger guaranteed income can become increasingly valuable.

The key: Don't automatically claim Social Security simply because you've reached 62. Consider how the decision fits into your entire retirement income strategy.

2. How Much Money Will I Actually Need?

One of the biggest retirement mistakes is estimating expenses based on assumptions instead of actual spending.

People often hear that they'll need 70% or 80% of their pre-retirement income. That's a useful starting point, but your lifestyle matters much more than a percentage.

Some expenses may disappear when you retire—commuting, payroll taxes, work clothing, and retirement contributions, for example. Others may increase. You might travel more, pursue hobbies, help grandchildren, renovate your house, eat out more often, or face higher healthcare expenses.

Start by separating spending into two categories: essential expenses such as housing, food, insurance, utilities, and healthcare, and discretionary expenses such as travel, entertainment, hobbies, and gifts.

Example: Suppose you determine that your desired lifestyle will cost $6,000 per month, or $72,000 annually. If Social Security and pensions provide $48,000, your savings and investments need to provide approximately $24,000 per year, plus enough to cover taxes and unexpected expenses.

That's a much more useful calculation than simply asking whether $500,000, $1 million, or $2 million is "enough."

The key: Retirement isn't about reaching a magic savings number. It's about whether your available income can support the lifestyle you want.

3. Which Accounts Should I Withdraw From First?

After spending decades accumulating money, retirement introduces a completely different challenge:

How do you take the money out?

You may have money in several different places:

• Traditional IRAs and 401(k)s, where withdrawals generally create taxable income.
• Roth IRAs and Roth 401(k)s, where qualified withdrawals are generally tax-free.
• Regular brokerage accounts, where taxes generally apply to interest, dividends, and realized investment gains.
• Savings accounts, CDs, pensions, Social Security, and other income sources.

Many retirees simply withdraw money from whichever account seems convenient. But coordinating withdrawals can potentially reduce taxes and help your savings last longer.

Example: Suppose you need $60,000 beyond Social Security to fund your lifestyle. Instead of withdrawing all $60,000 from a traditional IRA and creating $60,000 of additional taxable income, you might use $35,000 from the IRA and obtain the remaining $25,000 from other sources. Depending on your circumstances, that could result in a lower tax bill.

Your withdrawal choices can also affect Medicare premiums, taxation of Social Security benefits, and future required minimum distributions.

The key: Don't think of your retirement accounts as one giant pile of money. Different accounts receive different tax treatment, and choosing where your next dollar comes from matters.

4. How Should My Investments Change?

Retirement doesn't mean you should immediately sell your stocks and put everything into cash or bonds.

A person retiring at 65 may need their investments to support them for 25, 30, or even 35 years. Keeping some investments positioned for long-term growth can help your money keep pace with inflation.

But retirement introduces another danger: having a major market decline during the first several years while you're simultaneously withdrawing money. Selling investments after they've fallen significantly can make recovering from the decline more difficult. This is often called sequence-of-returns risk.

That's why retirement portfolios often contain a combination of growth investments and more stable investments rather than being entirely aggressive or entirely conservative.

Example: Someone retiring with $1 million might keep enough cash and relatively stable investments to cover several years of anticipated portfolio withdrawals while leaving another portion invested for longer-term growth. During a significant market decline, the retiree may have greater flexibility about which investments to sell.

There isn't one correct percentage of stocks and bonds for everyone. Your guaranteed income, spending needs, age, risk tolerance, and ability to reduce spending during poor markets all matter.

The key: Your retirement portfolio has two jobs—help fund today's lifestyle while continuing to grow enough to help fund tomorrow's.

5. What Will I Do About Healthcare?

Healthcare deserves its own retirement plan.

If you retire before age 65, you'll generally need another source of health insurance until Medicare eligibility. Depending on your situation, that could include coverage through a spouse, COBRA, an employer retiree plan, or an Affordable Care Act marketplace plan.

At 65, Medicare becomes central to healthcare planning, but Medicare doesn't make healthcare free. Retirees can still face premiums, deductibles, copays, prescription costs, dental care, vision care, hearing expenses, and services Medicare doesn't fully cover.

You'll also need to understand the basic choices between Original Medicare combined with supplemental coverage and prescription-drug coverage versus Medicare Advantage plans.

Long-term care is another consideration. Medicare generally isn't designed to pay indefinitely for custodial long-term care, such as extended assistance with everyday activities.

Example: Someone hoping to retire at 62 needs to determine how they'll obtain and pay for approximately three years of health insurance before becoming eligible for Medicare. If that coverage costs substantially more than expected, retiring at 62 rather than 65 could require significantly more savings.

The key: Don't choose a retirement date until you understand exactly how you'll obtain healthcare and approximately what it will cost.

6. How Will I Handle Taxes?

Retirement does not necessarily mean the end of income taxes. Instead, you may gain more control over when and how you create taxable income.

Traditional IRA and 401(k) withdrawals generally create taxable income. Pension income may be taxable. Investment income can create taxes, and depending on your overall income, some of your Social Security benefits may also be taxable.

This creates an opportunity for tax planning.

The years immediately after retiring can sometimes be particularly valuable. You may have stopped receiving a paycheck but haven't yet started Social Security or required minimum distributions. Your taxable income could temporarily be lower.

That may create an opportunity for Roth conversions, where money is moved from a traditional retirement account into a Roth account. You pay taxes on the converted amount now in exchange for potentially tax-free qualified withdrawals later.

Example: Imagine retiring at 65 and planning to delay Social Security until 70. Those five years may provide an opportunity to gradually convert portions of a traditional IRA to a Roth while intentionally managing taxable income.

That doesn't mean everyone should perform Roth conversions. Converting too much at once can create a large tax bill and potentially affect other costs.

The key: Instead of asking, "How can I pay the least tax this year?" consider, "How can I manage taxes over the rest of my lifetime?"

7. Should I Pay Off My Mortgage Before Retiring?

For many people, entering retirement without a mortgage feels like freedom. Eliminating a $1,500 or $2,000 monthly payment can dramatically reduce the amount of income your investments need to produce.

But paying off a mortgage isn't automatically the best mathematical decision.

Suppose you have a low-interest mortgage. Using a large portion of your liquid savings to eliminate that debt could leave you with less cash available for emergencies. Even more importantly, withdrawing a large amount from a traditional IRA or 401(k) to pay off the mortgage could create a substantial income-tax bill.

You should consider the mortgage interest rate, remaining balance, monthly payment, taxes, available savings, investment alternatives, and how strongly you value being debt-free.

Example: Suppose you owe $150,000 on your home. Taking $150,000 from a traditional IRA may require withdrawing considerably more than $150,000 once taxes are considered. That withdrawal could also push you into a higher tax bracket or affect other income-related costs.

On the other hand, if you can comfortably eliminate the mortgage without jeopardizing your savings, the reduced monthly expenses may provide significant financial and emotional benefits.

The key: Being mortgage-free can be wonderful, but don't create a tax or liquidity problem simply to eliminate the payment.

8. How Much Can I Safely Withdraw?

Once the paycheck stops, your retirement savings may essentially become your paycheck.

The challenge is determining how much you can withdraw without creating an unacceptable risk of running out of money.

You've probably heard about the 4% rule. In simplified terms, it suggests starting retirement by withdrawing approximately 4% of your portfolio during the first year and then adjusting future withdrawals for inflation.

It's a planning guideline—not a promise.

Example: Someone retiring with $1 million might initially use approximately $40,000 per year as a planning estimate. If Social Security provides another $40,000, that could create approximately $80,000 of gross annual income before considering taxes.

But someone retiring at 55 may need their money to last much longer than someone retiring at 70. Investment allocation, market performance, inflation, pensions, Social Security, and spending flexibility also affect what's sustainable.

One useful strategy is flexible spending. During strong markets, you might travel more or make larger discretionary purchases. During severe market declines, temporarily reducing optional spending could help protect your portfolio.

The key: Your withdrawal rate isn't something you choose once on retirement day and forget. Review it regularly as markets, spending, and your life change.

9. What Happens If I Live Much Longer Than Expected?

One of retirement planning's biggest financial risks is also something most of us hope happens:

We live a very long life.

Planning only until your average life expectancy can be dangerous because average means many people will live longer.

Someone retiring at 65 may need retirement income for 30 years or more. A married couple faces an even greater probability that at least one spouse could live well into their 90s.

Longevity also magnifies another quiet retirement risk: inflation.

Even moderate inflation can dramatically increase expenses over several decades.

Example: At 3% annual inflation, something costing $5,000 today would cost roughly $9,000 twenty years from now. Imagine that happening across groceries, insurance, property taxes, travel, utilities, and healthcare.

That's one reason maintaining some long-term investment growth and maximizing dependable lifetime income can be important.

You should also consider what happens if you eventually need help with everyday activities, home healthcare, assisted living, or nursing care.

The key: Don't build a retirement plan designed merely to reach age 80. Build one capable of supporting a potentially very long life.

10. What Happens Financially When One Spouse Dies?

This may be the least enjoyable retirement conversation—and one of the most important.

Couples naturally plan retirement around their combined income. But eventually one spouse may need to manage retirement alone.

Household expenses usually don't fall by half when one spouse dies. The survivor still has property taxes, utilities, insurance, home maintenance, groceries, transportation, and healthcare expenses.

Income, however, can decline substantially.

With Social Security, for example, a surviving spouse generally doesn't continue receiving both retirement benefits indefinitely. The survivor may ultimately receive the higher applicable benefit rather than the two benefits the household previously received.

Taxes can also change because a surviving spouse may eventually file as a single taxpayer rather than married filing jointly.

Example: Imagine a couple receives $5,000 per month from two Social Security benefits. After one spouse dies, the survivor may be left with only the larger applicable benefit. Yet the mortgage, property taxes, utilities, insurance, and most household expenses remain.

Couples should therefore run their retirement plan two ways: with both spouses alive and with either spouse surviving alone.

Also review beneficiaries on retirement accounts and insurance policies, wills, trusts where appropriate, powers of attorney, healthcare directives, and instructions for managing household finances.

The key: A strong retirement plan doesn't only take care of both of you. It should also protect either one of you.

Your Pre-Retirement Checklist

Before choosing your retirement date, make sure you can answer these questions:

• ☐ What will our realistic monthly retirement expenses be?
• ☐ How much guaranteed monthly income will we receive?
• ☐ When should each of us claim Social Security?
• ☐ How will we obtain health insurance before and after 65?
• ☐ How much can we reasonably withdraw from investments each year?
• ☐ Which accounts should we withdraw from first?
• ☐ Should we consider Roth conversions?
• ☐ Is our investment portfolio appropriate for retirement?
• ☐ Should we enter retirement with a mortgage?
• ☐ Could our plan survive a major market decline?
• ☐ Could our money last until age 90–100?
• ☐ What happens financially when one spouse dies?
• ☐ Are our beneficiaries, wills, powers of attorney, and estate documents current?
• ☐ Do we have enough accessible cash for major unexpected expenses?

One Number to Calculate First

If you're approaching retirement and don't know where to begin, start with this:

Annual Spending − Guaranteed Annual Income = Amount Your Savings Must Provide

For example:

$80,000 annual spending
− $55,000 Social Security and pension income
= $25,000 needed annually from savings

Now suppose you have $1 million invested. Instead of wondering whether "$1 million is enough to retire," you can ask a much more meaningful question:

"Can my $1 million portfolio reasonably provide the $25,000 annual gap, adjusted over time for inflation, without an unacceptable risk of running out?"

That one calculation begins to connect almost everything else—Social Security, investment strategy, taxes, withdrawal rates, healthcare costs, longevity, and lifestyle.

And perhaps that's the most important lesson of retirement planning:

Retirement isn't about accumulating the biggest possible pile of money. It's about turning the money you've accumulated into a dependable life.

This material is for general educational purposes and isn't individualized financial, investment, tax, Medicare, or legal advice.