Understanding Inflation’s Impact on Your Finances
Inflation continues to affect the cost of everyday essentials, from groceries and gasoline to housing and healthcare. While national inflation statistics provide useful context, they don’t always tell the full story of how rising prices affect your household.
At Dunncreek Advisors, we believe your financial plan should reflect your personal circumstances, priorities, and long-term goals. Understanding your own spending patterns can help you make informed decisions and prepare for the financial challenges that inflation may bring.
In this article, we’ll explore how to calculate your personal inflation rate, identify changes in your household expenses, and use that information to strengthen your financial plan.
What Is a Personal Inflation Rate?
The inflation rate you hear about in the news is generally based on broad measures of consumer prices, such as the Consumer Price Index (CPI). These measures track changes in the prices of a representative basket of goods and services.
However, your household’s experience with inflation may be different.
For example, a family that drives frequently may feel the impact of rising gasoline prices more than a household that primarily works from home. Similarly, a retiree with substantial healthcare expenses may experience inflation differently from a young family with childcare and housing costs.
Your personal inflation rate measures how much your own household spending has changed over a specific period. It offers a more meaningful perspective on the purchasing power of your income and savings.
How to Calculate Your Personal Inflation Rate
One practical way to understand your household’s inflation experience is to compare your spending from the same month in two consecutive years.
For example, you could compare your September 2026 expenses with your September 2025 expenses.
Step 1: Gather Your Household Spending
Collect your bank statements, credit card records, budgeting software reports, or other reliable spending information for both months.
Include major categories such as:
- Housing and utilities
- Groceries and household supplies
- Gasoline and transportation
- Healthcare and insurance
- Dining out and entertainment
- Travel and other discretionary spending
Step 2: Compare Expenses by Category
Create a spreadsheet that lists each spending category for both months. Comparing expenses line by line can help you identify which costs have increased and where your household may be experiencing the greatest pressure.
Step 3: Calculate the Percentage Change
For each category, use the following formula:
Personal Inflation Rate = (Current-Year Spending − Prior-Year Spending) ÷ Prior-Year Spending × 100
For example, if your grocery spending increased from $600 in September 2025 to $660 in September 2026, your grocery spending rose by 10%.
This calculation measures the change in your spending, which may reflect a combination of price increases, changes in the amount you purchased, and changes in your lifestyle. It is not a pure measure of price inflation, but it is a useful way to understand how your household budget has changed.
Step 4: Review Your Overall Household Spending
Compare your total spending for the two months, then consider which changes are temporary and which may continue into the future.
A spreadsheet such as Dunncreek Advisors’ expense analysis worksheet can help you organize this information and identify opportunities for further review.
| Expense Type | Category | Amount spent (September 2026) | Amount spent (September 2025) | % of total amount | 12-month inflation rate |
| Home | Rent | $0 | $0 | 0% | 0.0% |
| Home | Mortgage and property taxes | $0 | $0 | 0% | 0.0% |
| Home | Electricity/heating | $0 | $0 | 0% | 0.0% |
| Home | Water and trash service | $0 | $0 | 0% | 0.0% |
| Home | Telephone service | $0 | $0 | 0% | 0.0% |
| Home | Internet service | $0 | $0 | 0% | 0.0% |
| Home | Home furnishings and supplies | $0 | $0 | 0% | 0.0% |
| Essentials | Groceries | $0 | $0 | 0% | 0.0% |
| Essentials | Clothing | $0 | $0 | 0% | 0.0% |
| Essentials | Personal care (haircuts, bath products, cosmetics, etc.) | $0 | $0 | 0% | 0.0% |
| Auto/transportation | Gasoline | $0 | $0 | 0% | 0.0% |
| Auto/transportation | Auto maintenance/repair | $0 | $0 | 0% | 0.0% |
| Auto/transportation | Auto insurance | $0 | $0 | 0% | 0.0% |
| Auto/transportation | Registration/license fees | $0 | $0 | 0% | 0.0% |
| Auto/transportation | Parking/tolls | $0 | $0 | 0% | 0.0% |
| Auto/transportation | Cab fare/mass transit | $0 | $0 | 0% | 0.0% |
| Travel | Airfare | $0 | $0 | 0% | 0.0% |
| Travel | Hotels/other lodging | $0 | $0 | 0% | 0.0% |
| Travel | Car rental | $0 | $0 | 0% | 0.0% |
| Medical | Drugs and medical equipment | $0 | $0 | 0% | 0.0% |
| Medical | Medical services | $0 | $0 | 0% | 0.0% |
| Medical | Health insurance | $0 | $0 | 0% | 0.0% |
| Education/child care | School tuition, activitiy fees, etc. | $0 | $0 | 0% | 0.0% |
| Education/child care | Day care/nanny | $0 | $0 | 0% | 0.0% |
| Recreation/leisure | Dining out/takeout | $0 | $0 | 0% | 0.0% |
| Recreation/leisure | Recreation goods (electronics, pets, sporting goods, toys, etc.) | $0 | $0 | 0% | 0.0% |
| Recreation/leisure | Recreation activities (streaming services, pet services, movies, concerts, sporting events, etc.) | $0 | $0 | 0% | 0.0% |
| Other | Legal and financial services | $0 | $0 | 0% | 0.0% |
| TOTAL: | $0 | $0 | Total 12-month Personal Inflation Rate: | 0.0% |
Analyzing Expenses and Taking Action
Calculating your personal inflation rate is more than a budgeting exercise. It can provide valuable insight into your financial priorities and help you make thoughtful decisions about your money.
Identify Spending That May No Longer Reflect Your Priorities
You may discover that certain expenses have increased without adding much value to your life. Perhaps you are spending more on dining out, subscriptions, or other discretionary purchases than you realized.
This information allows you to redirect some of that spending toward the things that matter most to you, whether that means saving for retirement, supporting family members, traveling, or building financial flexibility.
Understand Changes in Your Real Cost of Living
Your personal inflation rate can also help you understand how much more it costs to maintain your current lifestyle.
You may not drive very much, so changes in gasoline prices may have little effect on your budget. On the other hand, rising insurance premiums, healthcare expenses, or grocery costs may have a more significant impact.
The important point is that inflation affects households differently. Examining your actual expenses can help you move beyond national headlines and focus on the financial realities of your own life.
Use Your Findings to Review Your Financial Plan
For those approaching or living in retirement, changes in household expenses can have important implications for long-term financial planning.
Higher living costs may affect:
- How much income you need during retirement
- Your retirement savings and withdrawal strategy
- Your emergency fund and cash reserves
- Your investment allocation and long-term growth expectations
- The timing of retirement or other major financial decisions
A comprehensive financial plan should account for the possibility that expenses will change over time. Reviewing your personal inflation experience can be a useful starting point for discussing whether your plan remains aligned with your goals.
How a Fiduciary Financial Planner Can Help
Inflation is one of many factors that can influence your financial future. A qualified financial planner can help you evaluate how changing expenses may affect your retirement income, savings strategy, and broader financial objectives.
At Dunncreek Advisors, I believe financial planning should be centered on your goals and priorities. I am committed to acting in my clients’ best interests and serving as their advocate throughout our work together.
I also believe it is important for clients to understand how their financial advisor is compensated and what professional standards guide the advice they receive.
When evaluating a financial planner, consider asking:
- Does the advisor have a fiduciary obligation to act in my best interests? A fiduciary commitment helps establish the professional responsibilities the advisor owes to clients.
- How is the advisor compensated? Understanding whether an advisor is fee-only, commission-based, or compensated through another arrangement can help you evaluate potential conflicts of interest.
You can learn more about finding a CERTIFIED FINANCIAL PLANNER™ professional through Let's Make a Plan, a resource from the CFP Board.
Take the Next Step With Dunncreek Advisors
If inflation has you wondering whether your retirement plan is still on track, you don’t have to navigate those questions alone.
At Dunncreek Advisors, I work with families to develop comprehensive financial plans that reflect their goals, priorities, and changing circumstances. I would be honored to help you understand your options and make informed decisions about your financial future.
Contact Dunncreek Advisors to Schedule a Conversation
Let’s discuss how inflation may affect your financial plan and what steps you can take to prepare.
Frequently Asked Questions About Inflation and Personal Finances
1. What is a personal inflation rate?
A personal inflation rate measures how much your household spending has changed over a specific period, such as from one year to the next. It provides a personalized view of changes in your cost of living, although it also reflects changes in purchasing habits and the quantities of goods and services you buy.
2. How does inflation affect retirement planning?
Inflation can reduce the purchasing power of retirement income over time, potentially increasing the amount you need to maintain your lifestyle. A comprehensive retirement plan can account for changing expenses, income needs, and investment strategies to help you prepare for the future.
3. How can a fiduciary financial planner help with inflation?
A fiduciary financial planner can help you evaluate how rising expenses may affect your savings, retirement income, and long-term financial goals. By reviewing your personal circumstances and financial plan, the advisor can help you make informed decisions that align with your priorities.
Dunncreek Advisors does not provide legal or tax advice, and this article is not intended to do so. Financial planning and investment recommendations should be based on your individual circumstances and objectives.