What Is Money? Inflation and the Colombian Peso

Why Money Exists

Imagine you grow coffee in Huila and you need shoes. The shoemaker does not want coffee beans — she wants beef. The cattle rancher wants building materials. This problem, known as the double coincidence of wants, made direct barter painfully inefficient for anything beyond the simplest exchanges.

Early societies solved this by agreeing on intermediate goods that everyone would accept. Salt, cattle, and eventually metals like gold and silver became commodity money — items with intrinsic value that worked as a universal medium of exchange. Over centuries, commodity money turned into coins stamped by governments, then paper notes backed by gold, and finally into what we use today: fiat money.

The Colombian peso, the US dollar, the euro — none are backed by gold or any physical commodity. They have value because governments declare them legal tender and because millions of people trust and accept them in daily transactions. This reveals a fundamental truth: money is a social agreement, and that trust can strengthen or weaken over time.

Understanding why money holds or loses value is one of the most important financial skills a Colombian can develop. It becomes clearer once you also understand how banks operate and the institutions behind the currency.

The Three Functions of Money

Economists describe money through three core functions. Every form of money, from colonial silver to a balance in your digital wallet, must perform these roles.

Medium of Exchange

Instead of bartering goods directly, you trade your labor for pesos and then trade pesos for what you need. When you tap your debit card at an Éxito supermarket, scan a QR code at a tienda, or send a transfer through Nequi, money is acting as a medium of exchange. To work well, it must be widely accepted, divisible, portable, and durable.

Store of Value

Money lets you save purchasing power for the future. If you earn pesos today, you expect to spend a comparable amount of goods next month. When prices rise steadily — even modestly — pesos held in cash lose a little value each month. This is why keeping significant savings in a zero-interest account is always a slow loss, even in a country with moderate inflation like Colombia.

Unit of Account

Money provides a common measuring stick. A kilo of rice, a bus fare in Bogotá, a month of rent — all priced in pesos. Without a shared unit of account you would need to know the exchange rate between every pair of goods. In Colombia, the peso serves this function reliably, which makes planning and comparison much easier than in economies with very high inflation.

What Gives Money Its Value

Since fiat money is not backed by gold, what keeps it from being worthless paper? Several reinforcing factors.

Government mandate. The Colombian state declares the peso legal tender. Taxes are paid in pesos, debts are settled in pesos, and salaries are paid in pesos. This creates baseline demand.

Trust and acceptance. Tens of millions of people use pesos every day. Employers pay wages in pesos, shops price goods in pesos, and the entire payment system runs on pesos. This network of acceptance is self-reinforcing — you accept pesos because you know others will accept them from you.

Controlled supply. The Banco de la República (BanRep) manages how many pesos circulate. When excessive money creation pushes inflation above its target range, BanRep raises its tasa de política monetaria to cool spending. Colombia’s central bank has historically operated with strong institutional independence, which is one reason the country has avoided the extreme inflationary episodes seen in some neighbors.

Economic productivity. Ultimately a currency is anchored to the goods and services an economy produces. Colombia’s diversified economy — with strong sectors in agriculture, oil, services, and manufacturing — gives the peso a solid foundation.

Inflation: Understanding Colombia’s Experience

Inflation is the sustained rise in the general price level. When annual inflation runs at 5%, something that costs a certain number of pesos today will cost about 5% more in a year. The bill in your wallet still shows the same number, but it buys slightly less.

Colombia’s inflation experience is fundamentally different from countries that have suffered hyperinflation. The country’s central bank targets inflation at around 3%, and recent years have seen annual rates in the 5–10% range as global shocks (energy prices, supply chains) temporarily pushed prices higher. This is moderate inflation — a real but manageable challenge, not a crisis. The strategies for managing it are correspondingly practical: earning a real return on savings, adjusting budgets periodically, and choosing instruments that preserve purchasing power.

How Inflation Is Measured

In Colombia, the DANE (Departamento Administrativo Nacional de Estadística) measures inflation through the IPC (Índice de Precios al Consumidor). The IPC tracks a basket of goods and services a typical household buys — food, housing, transport, health, education, recreation. The monthly and annual percentage change in this index is the inflation rate.

Why Moderate Inflation Still Matters Personally

Inflation is often called a “silent tax” because it shrinks your wealth without any explicit charge. Even at 5% per year, the effects accumulate:

• Cash savings lose value. Pesos in a zero-yield account or at home lose about 5% of their purchasing power per year.
• Wages may lag. If your salary is adjusted once a year but prices rise throughout the year, your real income dips between adjustments.
• Fixed peso debts become slightly cheaper. If you owe a fixed amount, moderate inflation erodes the real value of that debt over time — a mild benefit for borrowers.
• Long-term planning requires real-return thinking. A savings account paying 3% when inflation is 5% is losing you 2% per year in real terms.

Understanding inflation reframes every financial decision. It explains why earning some return on your money is essential, a theme we develop further when discussing savings options in Colombia.

The UVR: Colombia’s Inflation-Indexed Unit

The UVR (Unidad de Valor Real) is Colombia’s inflation-indexed unit of account, used primarily for long-term mortgage loans. Its peso value is updated daily to reflect cumulative inflation, keeping the real value constant over time.

Where the UVR Is Used

• Mortgages. UVR-denominated mortgages allow banks to lend at long terms despite uncertainty about future inflation. Your installments are expressed in UVR, so their peso amount rises with inflation — protecting the lender’s real return while offering you a lower initial payment than a fixed-rate loan.
• Some long-term contracts. Certain commercial and rental arrangements use UVR or other indices to maintain real value over time.

The UVR matters because it introduces a dual reality for some borrowers: your salary arrives in pesos, but part of your debt is measured in an inflation-adjusted unit. This is worth understanding before signing any UVR-denominated contract, a topic explored in the loans lesson.

BanRep: Guardian of the Peso

The Banco de la República is central to your financial life even if you never deal with it directly. Established in 1923, it has the mission of preserving the purchasing power of the currency and supporting the proper functioning of the payment system.

How BanRep Influences Inflation

BanRep’s main lever is its tasa de política monetaria — the benchmark interest rate that anchors every other interest rate in the economy. When inflation rises above target, BanRep increases rates to make borrowing more expensive and saving more attractive, cooling demand and easing price pressures. When inflation falls toward or below target, it can lower rates to stimulate growth.

Colombia’s central bank has maintained strong institutional independence for decades, which is why the peso has avoided the chronic devaluations suffered by currencies in countries whose central banks are less autonomous. This stability is a real advantage for Colombian savers and investors.

Digital Money vs. Physical Money

Although coins and bills are tangible, most pesos exist only as digital entries — in bank accounts, in digital wallets like Nequi, Daviplata, and Nu Colombia. When your employer deposits your salary, no cash moves; numbers change in computer systems. When you pay by QR code or transfer money through the Bre-B instant-payment system, the same thing happens.

• Digital money is traceable. Transfers and card payments leave records, which helps fight fraud but also lets the DIAN monitor economic activity.
• Physical cash is anonymous and still widely used in Colombia’s informal economy, particularly in smaller cities and rural areas.
• Both are real money. Whether a peso is a bill in your pocket or a number in your app, it has identical legal value and purchasing power.

The trend is strongly digital: QR payments and instant transfers through neobanks and digital wallets have transformed how Colombians pay every day.

Why Understanding Money Matters

Every financial decision you make is a decision about money, and in Colombia misunderstanding money has real costs. If you do not grasp inflation, you might leave savings in a zero-interest account and watch them lose purchasing power year after year. If you do not understand the UVR, you might take a mortgage without realizing how your installment will evolve. If you ignore how BanRep’s rate decisions affect your CDT yield, you might lock money at the wrong time.

Money is the language of your financial life. The remaining lessons build on this foundation, showing how the institutions that manage your money work and how to navigate the Colombian financial system with confidence.

Key Takeaways

• Money evolved from barter to commodity money to today’s fiat system, where value rests on government backing and collective trust.
• Money serves three functions: medium of exchange, store of value, and unit of account. Colombia’s peso reliably performs all three under conditions of moderate inflation.
• Colombia experiences moderate but persistent inflation (~5% in recent years), measured by DANE through the IPC. This is manageable but requires deliberate savings strategies.
• The UVR is an inflation-indexed unit used for mortgages and certain contracts, keeping real value constant over time.
• BanRep manages monetary policy through the tasa de política monetaria, with strong institutional independence that has kept Colombian inflation in check.
• Even moderate inflation erodes idle cash. Earning a real return on savings is not optional — it is essential.

In the next lesson, you will learn how Colombian banks operate as businesses, how they profit from your deposits, and what protects your money when you bank.