What Happened to Your Money? Understanding Inflation Since 2018

It’s a Tuesday evening, and you’re standing in the aisle of your local supermarket, staring at a box of cereal or a carton of milk that seems to have quietly crept up in price yet again. You find yourself doing a quick mental calculation, remembering how much simpler your household budget felt just a few years ago. You didn't change jobs, your habits are the same, and yet your paycheck doesn't seem to stretch nearly as far as it used to.

If you’ve found yourself wondering what on earth has happened to the cost of living over the past several years, you are far from alone. Life changed dramatically around 2020, and the ripple effects have reshaped our financial reality ever since. When people look back at the numbers, the burning question is usually simple: what does inflation since 2018 actually mean for our day-to-day spending power?

Let’s pull back the curtain on those numbers. We aren't going to look at dry economic theory or dense textbook definitions. Instead, we are going to walk through how the cost of living has shifted, what it means for your personal finances, and how you can get your bearings in a world where prices look very different than they did at the end of the last decade.

The World Before the Shift: Setting Our Baseline in 2018

To understand where we are now, we have to cast our minds back to 2018. Back then, the economic landscape felt relatively predictable. Inflation rates hovered comfortably around the traditional central bank targets of roughly 2% a year in places like the US and the UK.

If you bought a cup of coffee, filled up your car's gas tank, or paid your monthly rent in 2018, the price tag probably felt stable. Year-over-year price increases were so subtle that most of us didn't need to check our bank accounts before picking up dinner or buying new clothes. Money felt like it had a steady, reliable gravity.

Then came the extraordinary events of 2020 and the years that followed. Global supply chains tangled, energy markets experienced massive shocks, and massive infusions of stimulus hit economies worldwide to keep them afloat. The result was a sharp, rapid spike in the Consumer Price Index (CPI)—the standard basket of goods and services we use to track what things cost.

When people talk about cumulative inflation over a stretch of time, they are looking at how all those individual monthly price bumps stack up. A 2% bump one year, followed by a 7% jump the next, and a 4% rise after that don't just add up linearly—they compound.

Running the Numbers: A Walkthrough with Maya

To see how this plays out in real life, let’s follow a hypothetical person named Maya.

Back in 2018, Maya lived in a mid-sized city and rented a comfortable two-bedroom apartment for $1,500 a month. Her salary at the time was $60,000 a year, and after taxes, rent, groceries, and a modest monthly contribution to her savings, she felt like she was building a secure foundation for her future. She knew roughly what she spent every week, and her budget worked without too much micro-management.

Fast forward through the turbulent economic shifts of the early 2020s. Let’s look at a hypothetical cumulative inflation rate of roughly 25% to 30% spread across those years (reflecting the real-world post-pandemic price surges seen across many major economies).

If we apply a hypothetical 28% cumulative increase to Maya’s baseline expenses between 2018 and the present day, her financial picture looks drastically different:

• The Rent: That same apartment that cost $1,500 in 2018 now demands around $1,920 a month.
• The Groceries: A weekly grocery bill that used to run her $100 now sits closer to $128 for the exact same cart of items.
• The Salary Reality: While Maya did receive modest annual raises averaging 3% a year, her salary has grown to roughly $69,500.

At a glance, Maya is making nearly $10,000 more a year than she did in 2018. On paper, she got a raise! But when she runs the actual math on her purchasing power, she realizes her income didn't quite keep pace with the compounding cost of living. Even though the absolute number in her bank account is higher, her money simply doesn't buy what it used to.

This is the sneaky psychological trap of inflation: we feel like we should be doing better because our salary numbers are higher, but our everyday receipts tell a different story. If you want to see how your own savings or future goals are impacted by these shifts over time, you can run your own scenarios using a free Inflation Calculator to see how purchasing power evolves.

The Non-Obvious Places Inflation Hits Hardest

Not all price increases are created equal. When economists talk about an average inflation rate of 25% or 30% over a multi-year period, that’s just an average. The reality of inflation since 2018 is that certain categories of spending surged way ahead of the pack, while others stayed relatively calm.

Here is what usually trips people up when they look at their budgets:

1. The "Sticky" Essentials

Discretionary items—like electronics, clothing, or streaming services—often saw modest price increases, and sometimes even dropped in price due to technological efficiencies. But the essentials—housing, energy, healthcare, and basic food staples—shot up dramatically. Because you can't easily opt out of eating or paying rent, these price hikes hit household cash flow immediately.

2. Lifestyle Creep vs. Inflation Creep

Many people look at their higher spending today and blame themselves. They think, “I must be eating out too much” or “I’m not budgeting well enough.” But a huge chunk of that higher spending is simply baseline inflation. You aren't necessarily buying more luxury items; you're just paying significantly more for the exact same baseline survival kit.

3. The Shrinkflation Surprise

Manufacturers discovered a clever way to pass on higher costs without changing the sticker price: shrinking the package. That box of cereal, bag of coffee, or container of ice cream might cost the same as it did a couple of years ago, but it contains 10% to 15% less product. When you calculate the cost per ounce, the real rate of inflation is often hiding right in plain sight on the nutrition label.

Why Looking Backward Can Actually Make You Feel Better

It’s easy to let these numbers induce a sense of financial vertigo. Looking back at how much cheaper things used to be can feel depressing, as if time and opportunity slipped through your fingers.

But there is an unexpected comfort in looking at the data clearly: knowing the exact enemy takes away its mystery.

When you feel financially squeezed, the vague anxiety that "everything is too expensive" makes you feel helpless. But when you break it down—when you realize that a 25% or 30% jump in prices over several years is a macroeconomic trend, not a personal failure—the problem suddenly becomes quantifiable. And once something has a number attached to it, you can build a plan around it.

You aren't failing at budgeting; the baseline simply moved. Recognizing that fact lets you drop the self-judgment and focus on the practical levers you actually control today.

Practical Steps to Reset Your Budget for Today's Prices

So, how do you adjust your financial life to match post-2018 realities without overhauling your entire existence? You don't need a radical lifestyle freeze. You just need to update your financial dashboard.

• Audit your baseline versus your choices: Look at your fixed costs (housing, insurance, utilities, basic groceries) compared to your flexible costs (dining out, entertainment, shopping). Since fixed costs absorbed the heaviest blows from recent inflation, that is where you’ll find the biggest opportunities to optimize—whether that means negotiating a better insurance rate, switching utility providers, or rethinking a housing arrangement.
• Rethink your savings yield: For years following 2018, interest rates on cash savings were practically zero. Money sitting in a standard checking account was losing value to inflation rapidly. Today, high-yield savings accounts and short-term fixed deposits offer much better returns, helping your cash fight back against rising prices.
• Focus on income growth: While trimming expenses has a hard mathematical limit, your earning potential does not. Use the reality of higher living costs as leverage during your next performance review, or explore side projects and skill upgrades that position you for stronger income growth in your career.

Inflation changed the financial landscape, but it didn't break your ability to manage your money. By understanding the gap between 2018 and today, you can stop fighting phantom budgeting problems and start making deliberate, confident choices with the money you have right now.

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Disclaimer: The information provided here is for general informational and educational purposes and should not be construed as professional financial advice. Always consider your own personal circumstances or speak with a qualified professional before making major financial decisions.

Frequently Asked Questions

Did inflation happen all at once or gradually since 2018?

While price increases happened at a relatively normal, steady pace through 2018 and 2019, the major surge occurred between 2021 and 2023 due to post-pandemic economic reopening, supply chain bottlenecks, and energy shocks. Since then, inflation rates have generally cooled down toward historical averages, but the higher price levels established during those peak years are here to stay—meaning prices haven't dropped back to 2018 levels, they've simply stopped climbing quite as fast.

How can I calculate exactly how much my money has lost in value?

You can measure the change in purchasing power by using official Consumer Price Index (CPI) data or an online inflation calculator. By plugging in an amount from 2018 and comparing it to the present day, you can see the exact percentage change in the cost of goods and services, helping you understand how much more you need to earn today to maintain the exact same lifestyle you had back then.

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For help running these numbers and managing your money on the go, check out the free Finlaa app.