A few years ago, 2022 was a rather particular year for anyone following the economy. Central banks raised interest rates like never before, inflation skyrocketed to levels unseen in decades, and suddenly we all started talking about concepts that previously seemed like something economists would discuss. One of those terms that sounded strange but directly affected people’s wallets was the meaning of tax inflation adjustment—especially when it came up in discussions of IRPF.

But first, what does “to deflate” really mean? Basically, to deflate is a tool economists use to compare economic data over time by removing the “noise” created by inflation or deflation. Imagine you earn 100 euros more this year than last year. That sounds good, right? But if inflation has risen by 10%, your purchasing power has actually gone down. That’s where the meaning of tax inflation adjustment comes in: adjusting those figures to see what’s really happening.

What’s interesting is that this concept isn’t only applied to GDP or other macroeconomic data. In Spain, politicians and economists had been debating for months whether to apply it to the IRPF, the personal income tax. The idea was fairly logical: if your salary goes up, but inflation also rises—and on top of that you automatically move into a higher tax bracket—you end up paying more taxes on money that actually has less value. That’s what the inflation adjustment of the IRPF was meant to prevent.

To understand better how it works, think of a country that produces goods worth 10 million in year one. The next year, production rises to 12 million. At first glance it looks like a 20% increase, but if prices rose by 10% over that period, the real growth was only 10%. When we normalize those figures by accounting for inflation, we are doing the inflation adjustment—bringing the true economic performance into view.

In other countries, they’ve been doing this for years. The United States adjusts annually, as do France and the Nordic countries. Germany does it every two years. In Spain, at the national level it hadn’t been done since 2008, although some autonomous communities began considering it when inflation reached 6.8% toward the end of 2022.

Now, the meaning of tax inflation adjustment has real implications for your investments. If an inflation adjustment of the IRPF were applied, it would mean taxpayers would have more disposable income to invest. That could change many people’s decisions about where to put their money.

In times of high inflation and elevated interest rates, investors often look for assets that have historically performed well under these conditions. Gold, for example, tends to maintain or increase its value when money loses purchasing power. Stocks are more complicated, because inflation and high rates generally put pressure on prices, but some companies—such as those in the energy sector we saw in 2022—can thrive. The foreign exchange market also offers opportunities, although it is more volatile and risky.

What many people don’t consider is that the real benefits of an inflation adjustment of the IRPF for the average person aren’t that spectacular. We’re talking about savings of a few hundred euros per year, not figures that radically transform outcomes. So, while understanding the meaning of tax inflation adjustment is important from a broad economic perspective, its real impact on individual investment decisions is probably more limited than some politicians suggested.

The important thing is that you understand how inflation and fiscal adjustments affect your actual purchasing power. Diversifying your investments, considering defensive assets, and not getting carried away by nominal figures that don’t reflect reality—these are what truly matter. The meaning of tax inflation adjustment is a tool for looking beyond those misleading numbers.