HOW DOES MONEY WORK?

How does money work? Money affects almost every decision you make as a property investor. It influences whether you buy a rental property, invest in KiwiSaver, contribute to a managed fund, or consider emerging assets like cryptocurrency. Yet many people spend years earning money without fully understanding how it works.

Understanding the answer to the question “how does money work?” can help you make better financial decisions, avoid costly mistakes, and build long-term wealth. While money itself may seem simple, the systems behind it are surprisingly complex.

In this article, we’ll explain how does money work, why inflation matters, how banks create money, how investing grows wealth, and what role property, KiwiSaver, managed funds, and cryptocurrency can play in a New Zealand investor’s financial future.

What Is Money?

At its core, money is a tool. Money allows people to exchange goods and services without having to barter. Imagine trying to swap lawn mowing services for groceries, then finding a supermarket willing to accept them. Society uses money because it simplifies trade.

Money performs three important functions:

• It acts as a medium of exchange.
• It stores value over time.
• It provides a unit of measurement for prices.

New Zealand uses the New Zealand dollar (NZD). Most money today exists digitally rather than as physical cash. When you check your bank balance, you are usually looking at numbers stored electronically rather than money sitting in a physical vault.

Understanding this basic concept forms the foundation for answering the question: how does money work?

Why Money Has Value

Many people assume money has value because governments say it does. While government backing helps, the real reason money works is that people trust it. Trust allows you to accept a $50 note in exchange for your labour because you know someone else will accept it later when you buy groceries, fuel, or building supplies. Historically, currencies often linked to precious metals such as gold. Today’s currencies operate differently. Economists call them “fiat currencies.”

A fiat currency gains value because:

• Governments declare it legal tender.
• Central banks manage supply.
• People and businesses accept it.
• Financial systems depend on it.

If confidence in a currency disappears, its value can fall rapidly. History contains many examples of countries experiencing severe inflation after trust in their currency collapsed. Fortunately, New Zealand has maintained a relatively stable currency through responsible monetary policy and an independent central bank.

How Banks Create Money

One of the most surprising answers to how does money work involves the banking system. Many people believe banks simply lend out money deposited by customers. In reality, modern banking works differently.

When a bank approves a mortgage, it effectively creates new money. The bank credits the borrower’s account with funds that did not previously exist in the economy. For example, imagine you purchase a rental property and borrow $700,000. The bank doesn’t necessarily transfer $700,000 from another customer’s savings account. Instead, it creates a deposit in your name.

This lending process increases the money supply. When borrowers repay debt, the opposite occurs. Money leaves circulation and the money supply contracts. Because residential property makes up a significant proportion of bank lending in New Zealand, the housing market plays a major role in money creation throughout the economy.

The Relationship Between Money and Property

Property investors need to understand the relationship between money supply and asset prices. When interest rates fall, borrowing generally becomes cheaper. Lower borrowing costs often encourage people to purchase homes and investment properties. Increased demand can push prices higher. When interest rates rise, borrowing becomes more expensive. This can reduce demand and place downward pressure on property values. Property values therefore often move alongside broader monetary conditions.

This doesn’t mean prices always rise or fall immediately after interest rate changes. However, over longer periods, access to credit strongly influences housing markets.

Successful property investors pay attention not only to specific properties but also to:

• Interest rates
• Inflation
• Lending conditions
• Population growth
• Employment trends
• Economic confidence

Money flows through all these factors.

Why Inflation Matters

Inflation measures how quickly prices increase over time. If inflation averages 3% per year, something costing $100 today may cost approximately $103 next year. Many investors underestimate inflation’s impact. A savings account earning 2% while inflation runs at 3% may leave you poorer in real terms despite your account balance increasing. This explains why many New Zealanders choose to invest rather than hold large amounts of cash.

Inflation can affect property investors in several ways:

Rental Income

Over time, rents often increase as the general cost of living rises.

Property Values

Property values can rise partly because inflation increases replacement costs and construction expenses.

Mortgage Debt

Inflation can benefit borrowers because fixed debt becomes easier to repay using future dollars that may be worth less in purchasing power.

For example, a $500,000 mortgage feels much smaller if wages and rents double over the coming decades.

Many experienced investors view this as one of property’s major advantages.

The Difference Between Saving and Investing

Saving and investing are not the same thing. Saving focuses on preserving money. Investing focuses on growing money. Both have important roles. Savings provide liquidity and emergency funds. Investments seek long-term growth.

Imagine you place $100,000 into a savings account earning 2%. After one year, you may have approximately $102,000. If inflation runs at 3%, your purchasing power actually declines.

Now imagine the same money invested in a diversified portfolio returning 7% annually over many years. While returns fluctuate, long-term growth can significantly outpace inflation. This illustrates why understanding how does money work matters so much. Money sitting idle often loses purchasing power.

Property as an Investment

New Zealanders traditionally love property, and with good reason.

Property offers several potential advantages:

• Leverage through mortgages
• Rental income
• Long-term capital growth
• Inflation protection
• Tangible ownership

Many property investors build wealth by allowing tenants to contribute toward loan repayments while the property’s value increases over time.

However, property also has disadvantages:

• Vacancies
• Maintenance costs
• Interest expenses
• Compliance requirements
• Tenant risks
• Lack of diversification

A rental property requires active management, either personally or through a property manager. Unlike a managed fund, you cannot instantly sell a bathroom renovation or a bedroom to raise cash. Property remains a powerful wealth-building tool, but investors should understand both benefits and risks.

What Are Managed Funds?

A managed fund pools money from many investors. Professional fund managers then invest that money on behalf of the investors. Instead of buying shares in dozens or hundreds of companies individually, you buy units in the fund.

The fund manager handles:

• Research
• Investment selection
• Portfolio management
• Administration
• Reporting

Managed funds may invest in:

• New Zealand shares
• International shares
• Bonds
• Property securities
• Infrastructure assets
• Cash investments

This provides diversification that many individual investors struggle to achieve on their own.

How Managed Funds Generate Returns

Managed funds generally generate returns in two ways. The first source is income.

This can include:

• Dividends from shares
• Interest from bonds
• Rental income from certain property investments

The second source is capital growth. As the underlying investments increase in value, the fund’s unit price can rise. Some years produce strong returns. Other years produce losses.

Diversified investors typically focus on long-term performance rather than short-term fluctuations. Many successful investors combine property investments with managed funds to reduce concentration risk. Rather than placing all their wealth into Auckland residential property, they gain exposure to thousands of companies around the world.

KiwiSaver Is a Managed Fund

Many New Zealanders do not realise that KiwiSaver generally operates as a managed fund. When you contribute to KiwiSaver, professional investment managers invest your money according to your selected fund type.

Common options include:

• Conservative funds
• Moderate funds
• Balanced funds
• Growth funds
• Aggressive funds

Each invests in different combinations of shares, bonds, property, and cash. A younger investor with decades until retirement may choose a growth-oriented fund. Someone approaching retirement may prefer lower volatility.

KiwiSaver offers several advantages:

• Employer contributions
• Government contributions (subject to eligibility requirements)
• Professional management
• Automatic investing
• Diversification

Property investors sometimes focus exclusively on real estate and ignore KiwiSaver. That can mean missing valuable diversification opportunities.  A well-rounded investor often uses both.

Should Property Investors Invest Outside Property?

Many experienced investors eventually ask this question. For years, their investment strategy may revolve entirely around property. Then they discover that most of their wealth depends on a single asset class in a single country. Diversification can reduce risk.

Managed funds provide exposure to industries such as:

• Technology
• Healthcare
• Manufacturing
• Consumer goods
• Finance

These sectors may perform differently from residential property. For example, if Auckland rental property experiences a difficult period, international share markets may continue growing. Diversification does not eliminate risk, but it helps reduce dependence on one investment type. Many financially successful New Zealanders build portfolios containing both property and managed funds.

Where Does Cryptocurrency Fit?

No discussion about money would feel complete without mentioning cryptocurrency.  Cryptocurrencies such as Bitcoin operate differently from traditional money. They generally do not rely on central banks or governments. Instead, they use decentralised computer networks and blockchain technology.

Supporters believe cryptocurrency offers benefits such as:

• Limited supply
• Decentralisation
• Global accessibility
• Protection against certain monetary risks

Critics raise concerns including:

• Extreme volatility
• Regulatory uncertainty
• Speculative behaviour
• Security risks

Bitcoin has experienced dramatic price increases and substantial declines throughout its history. Unlike rental property, cryptocurrency does not generate rent. Unlike many shares, it does not produce dividends. Its value depends largely on market demand and investor sentiment. For this reason, many financial advisers suggest viewing cryptocurrency as a speculative asset rather than a core investment strategy. Most property investors should avoid allowing cryptocurrency to dominate their portfolio. 

The Power of Compound Growth

Perhaps the most important lesson about money involves compound growth. Compound growth occurs when your returns generate additional returns. Albert Einstein reportedly described compounding as one of the world’s most powerful financial forces, though the quote’s authenticity remains debated. Regardless of who said it, the principle remains true.

Consider a $10,000 investment earning 8% annually:

• Year 1: $10,800
• Year 2: $11,664
• Year 10: Approximately $21,589
• Year 20: Approximately $46,610
• Year 30: Approximately $100,627

The investor contributed only $10,000. Compounding generated the rest. Time matters enormously. Starting early usually matters more than finding the perfect investment.

Common Money Mistakes Investors Make

Many investors damage their long-term wealth by making avoidable mistakes.

Chasing Quick Riches

People often pursue investments solely because prices recently increased. This behaviour can lead to poor decisions.

Ignoring Diversification

Concentrating everything in one asset class creates unnecessary risk.

Carrying Bad Debt

High-interest consumer debt can undermine wealth-building efforts.

Trying to Time Every Market

Consistently predicting market movements proves extremely difficult.

Failing to Understand Fees

Investment fees may seem small but can significantly affect long-term returns.

Neglecting Education

Investors who never learn how money works often make emotional decisions during uncertain periods.

A Practical Wealth-Building Framework

For many New Zealand property investors, a balanced approach may look something like this:

1. Maintain an emergency fund.
2. Pay down high-interest debt.
3. Contribute regularly to KiwiSaver.
4. Invest in quality property when financially appropriate.
5. Diversify through managed funds.
6. Treat cryptocurrency, if used at all, as a small speculative allocation.
7. Focus on long-term goals rather than short-term market noise.

This framework allows investors to benefit from multiple sources of wealth creation while managing risk.

Summary: How Does Money Work?

So, how does money work?

Money works because people trust it as a store of value and a medium of exchange. Banks create much of the money supply through lending. Inflation reduces purchasing power over time, which explains why investing often becomes necessary for long-term wealth creation.

For New Zealand property investors, understanding how does money work can improve investment decisions dramatically. Property can provide leverage, rental income, and long-term growth. Managed funds offer diversification and professional management. KiwiSaver represents an accessible managed fund structure that many investors already use. Cryptocurrency introduces new possibilities but also significant risks.

The most successful investors rarely rely on a single asset. Instead, they combine education, discipline, diversification, and long-term thinking.

Ready to Build a Stronger Financial Future?

Whether you own one rental property or an entire portfolio, understanding your money is the first step toward growing it.

At EpsomTax.com Limited, we help New Zealand property investors understand the financial, tax, and investment implications of their decisions. If you want advice tailored to your situation, contact our team today and discover how better financial knowledge can help you build lasting wealth with confidence.