Why Social Security COLA May Not Cover Your Costs

If you’re relying more heavily on Social Security in retirement, the annual Cost-of-Living Adjustment (COLA) probably feels like a built-in safeguard. On paper, it’s meant to help your income keep up with inflation so your purchasing power doesn’t erode over the long-term.

But in practice, that’s not always how it plays out.

In our experience working with hundreds of clients in the greater Chicago area, our financial professionals find that many retirees are surprised to find that even when COLA increases are applied, their day-to-day expenses still feel like they’re rising faster than their incomes. 

That disconnect can quietly reshape your retirement plan over time if left unaddressed. 

How Is Social Security COLA Calculated?

The Social Security COLA is based on a broad measure of inflation, the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W). Each year, the government compares third-quarter inflation data with the same period in the prior year. 

If prices have increased, benefits are adjusted accordingly.

That sounds straightforward, but the key issue is this: CPI-W reflects the spending habits of working individuals, not retirees. 

So while COLA does adjust for inflation at a high level, it doesn’t necessarily track the specific expenses that tend to matter most in retirement. That distinction is where many retirement planning challenges begin.

Could Your Personal Inflation Rate Be Higher Than COLA?

The short answer is yes, and the reason is how inflation actually affects your cost of living.

Inflation isn’t one uniform number that affects everyone the same way. It’s personal, and it reflects where your dollars are going. 

A useful way to think about it is like a national weather report. The average temperature might look comfortable, but your local conditions could feel much hotter or colder than the averages. Your cost of living works the same way.

In retirement, your spending is notably different. And those shifts tend to impact your budget in areas that have historically increased faster than the general inflation rate.

• Healthcare is usually the biggest driver. As you move through retirement, premiums, prescriptions, and out-of-pocket costs often take up a larger share of your income. Even small increases in these costs can outpace a typical COLA.
• Housing is another key factor. Even if your mortgage is behind you, property taxes, insurance, utilities, and ongoing maintenance continue, and in the Chicago metro area, property taxes in particular can rise in a way that puts steady pressure on your budget.
• Taxes themselves can also create a hidden form of inflation. As your income changes over time, especially when Required Minimum Distributions begin (age 73 to 75), a portion of your Social Security benefits may become taxable. That reduces what you actually have available to spend, even if your gross income appears to be increasing.
• Then there’s lifestyle spending. Retirement often includes more travel, time with family, a second home, or new hobbies. These are meaningful parts of your quality of life, but they aren’t reflected in the standard inflation measures used to calculate COLA.

When you put all of this together, it’s not unusual for your personal inflation rate to run significantly higher than the number used to adjust Social Security.

For example, if your benefit increases by 3% in a given year, but your actual expenses rise closer to 5%, you’re gradually losing purchasing power. 2% may not seem significant right away, but over time, it compounds and becomes more noticeable.

This is something we hear frequently in retirement planning conversations across the Chicago metro area. Many people assume Social Security will keep pace with their lifestyle, only to find that it falls far short in the areas that matter the most. That’s where working with a Chicagoland financial planning team can help: by identifying where inflation is most likely to affect your plan and making timely adjustments.

Listen to our newest podcast, “The Retirement Risk Most People Overlook.”

How Does Social Security Timing Impact the Equation?

When you claim Social Security isn’t just about when the checks start—it directly affects how much income you receive for the rest of your life and how those annual cost-of-living adjustments (COLA) compound over time.

At a high level:

• Claim earlier → smaller base benefit
• Delay (up to age 70) → larger base benefit

Since COLA increases are applied as a percentage of your starting benefit, timing matters more than many people realize.

Why Timing Matters

COLA is designed to help income keep pace with inflation, but it’s applied to your initial benefit. That means:

• Larger starting benefit → larger dollar increases over time
• Smaller starting benefit → smaller increases, even if the percentage is the same

Over a 20–30 year retirement, this difference compounds significantly.

Example 1: Claiming Early vs. Delaying

Let’s look at a simplified example:

• Start benefit at 62: $2,000/month
• Start benefit at 70: $3,200/month
• Assume 3% annual COLA
  

After 15 years:

• Early claimant: ~$3,115/month
• Delayed claimant: ~$4,984/month

This isn’t just a year-to-year gap; it’s a widening gap driven by compounding COLA on a higher initial base. Waiting doesn’t just increase your benefit today; it increases your annual raises for life.

Example 2: Inflation Pressure on Fixed Income

Now layer in real-life spending.

If essential expenses (housing, healthcare, food, transportation, hobbies) rise faster than COLA—say 4–5% annually versus 2–3% COLA—your benefit may fall behind if claimed early.

Delaying gives a higher starting point, providing more room to absorb rising costs and helping maintain lifestyle sustainability.

Example 3: Coordinating Timing as a Couple

For married couples, strategic coordination can maximize lifetime benefits:

• One spouse claims early to generate immediate income
• The other delays to maximize the larger benefit

Why it works:

• The larger delayed benefit often continues for the surviving spouse
• COLA on that higher benefit adds long-term stability

Often, the goal isn’t maximizing both benefits, but optimizing the one likely to last the longest.

Where COLA Fits Into the Bigger Picture

It’s easy to think of COLA as a built-in inflation hedge, but it doesn’t always match your personal cost increases, especially in retirement, where healthcare and various types of insurance often rise faster than the averages for inflation.

That’s why Social Security timing should be viewed alongside:

• Your withdrawal strategy from investments
• Tax planning (since higher benefits can impact taxation)
• Longevity expectations
• Income needs in your early vs. later retirement years

Example of Coordinating Social Security with Portfolio Withdrawals 

If COLA isn’t fully keeping up with your expenses, your portfolio often becomes the buffer, but how you draw from it can make a meaningful difference over longer time periods.

Consider this example:

You retire with $1 million invested and begin receiving $3,000 per month from Social Security. In a given year, your benefits increase by 2.5% through COLA. At the same time, your actual expenses, especially healthcare and insurance, rise closer to 5%.

That creates a potential gap that compounds over time.

To maintain your lifestyle, you need to pull more from your portfolio to make up the difference. The question becomes: how do you do that without compromising your lifestyle later in life?

A disciplined approach might look like this:

• You withdraw a fixed $40,000 per year, increasing it slightly for inflation each year
  
• You take withdrawals proportionally from all investments, regardless of market conditions
  

This works fine in stable market environments. But if the markets decline while your expenses are rising, you could end up selling growth assets at the wrong time, putting added pressure on your long-term financial security.

Now compare that to a more flexible approach:

• In years when expenses rise faster than expected, you adjust withdrawals to match real spending needs
  
• During market downturns, you pull from more conservative assets like cash or short-term bonds instead of equities
  
• When markets recover, you rebalance and potentially refill those conservative buckets
  

Think of it as a coordinated system:

• Social Security provides a baseline income stream that adjusts annually
  
• Your portfolio fills in the gaps when COLA falls short
  
• Other income sources (such as dividends, rental income, or part-time work) can reduce pressure on withdrawals
  

In this example, you aren’t relying on one source to do all the work. Instead, each segment adjusts based on developments in inflation, markets, and spending. That flexibility can help smooth out the impact of rising costs and market volatility, especially over a retirement that could last 30 years or more for one or both spouses.

Should You Include Supplemental Income to Bridge the COLA Gap in Retirement?

When there’s a mismatch between COLA and your actual cost of living, the focus shifts to building additional income sources that can help fill that gap. This doesn’t mean taking on unacceptable risk. It means structuring your resources to provide increased flexibility and income.

For some, that may involve investing in income-generating assets to produce more cash flow over time. For others, it may include more strategic withdrawal planning, such as drawing from different accounts based on tax treatment and market conditions.

Tax planning can also play an important role. For example, Roth conversions earlier in retirement may help manage future tax exposure, thereby preserving more of your income for your future use.

Each of these decisions is interconnected, which is why they’re typically evaluated together rather than separately.

Is Your Retirement Plan Realistic? 

One of the most common challenges we see isn’t just inflation; it’s the assumption that a plan based on today’s conditions will hold up over time. In reality, your financial plan should evolve as conditions change. Inflation, markets, taxes, and your own spending patterns all change over time.

That’s why regular reviews are so important. Revisiting your assumptions, even once a year, can help you stay aligned with what’s actually happening, rather than relying on outdated projections. Connect with our team today to discuss your Social Security planning needs.