How Blockchain Technology Will Revolutionize Transactions

You may make several monetary transactions every day. But have you ever stopped to consider the cost of each transaction?

Imagine paying with a credit card. For this transaction, there is a processing fee attached to each payment. Similarly, when you go to a bank to take out a loan, or the stock exchange to invest in shares, these institutions take a small cut as fees and charge interest.

These fees may fund worthwhile things such as employee wages, fraud protection, or credit card rewards. However, they still represent an additional cost. While the loss per transaction may seem negligible, those fees add up significantly over the course of a month or year.

Much of the bureaucratic apparatus behind traditional banking is no longer necessary in the age of the internet. Blockchain technology, even in its relatively early stages, has demonstrated that.

This post explains how distributed ledger technology (blockchains) has the potential to revolutionize transactions.

What you lose on traditional transactions

Each credit card payment typically involves two costs:

• A fixed fee of around $0.25
• A percentage fee ranging from approximately 1.4% to 2.6%, depending on the card network

American Express cards generally charge slightly higher fees, ranging from 2.5% to 3.5%.

What does that mean in practice?

If you pay $10 for lunch—a sandwich, sides, and a drink—with your credit card, transaction fees can total roughly $0.40–$0.50. That’s enough to pay for an extra topping or a larger drink.

These fees accumulate quickly, and they don’t even include interest charges on unpaid credit card balances, which can reach 30% annually.

Over time, these costs can amount to thousands of dollars. One potential solution is eliminating many of the intermediaries by using decentralized protocols built on blockchain technology.

The basics of blockchain

For those new to the technology, a blockchain is essentially a decentralized database. Rather than storing data on a single server or computer, copies are distributed across many different devices.

The data is immutable. In simple terms, once information has been added to the blockchain, it cannot be altered. If someone attempts to modify the data on one computer, the rest of the network detects the inconsistency and rejects the change.

The blockchain also records information in chronological order. Together, these properties make it well suited for maintaining a trustless ledger of transactions without relying on a central authority or third party.

How blockchain technology reduces transaction costs

While blockchains can significantly reduce transaction costs, they do not eliminate them entirely.

Users pay network fees to have their transactions included in the blockchain. Transactions are grouped together into “blocks” and processed sequentially, which is where the term blockchain comes from.

Unlike traditional payment systems, blockchain transaction fees work differently.

The cost of a transaction generally depends on how quickly you want it processed. The sooner you want your transaction included in a block, the higher the fee you’re willing to pay.

Importantly, the size of the payment usually has little impact on the transaction fee. Sending $1 or $1 billion often costs nearly the same.

Blockchain transactions also offer atomic settlement. Payment and transfer of ownership can occur in a single transaction, greatly reducing settlement risk and minimizing the need for escrow services, insurance, or lengthy settlement periods. Even today, stock purchases can still take multiple days to fully settle.

Explaining atomicity

The word atomic means indivisible. An atomic transaction cannot be broken into intermediate steps.

This concept is easiest to understand through an example.

With traditional payment systems, a credit card purchase follows several stages:

1. Your payment is sent to a payment processor such as National Processing, Square, or Helcim.
2. The processor forwards the transaction to the card network, such as Visa, Mastercard, American Express, or Discover.
3. The network settles the payment into the merchant’s account.

Although this process typically takes only seconds from the customer’s perspective, it still contains multiple intermediaries, potential failure points, and opportunities for fees.

By contrast, a blockchain transaction simply transfers the funds while recording the transaction on the blockchain.

Atomicity becomes even more valuable when exchanging physical assets.

Imagine finding a painting created by an artist in India that you would like to purchase.

With traditional payment methods, several risks exist:

• The artist may never ship the painting.
• The painting may be damaged during transit.
• The artist may not have access to the same payment systems you use.
• International payments may be slow or expensive.

To reduce these risks, traditional transactions often require installment payments, escrow services, shipping insurance, and trust between both parties—all of which increase cost and complexity.

With blockchain technology, much of this process can be simplified. A smart contract could automatically release payment once predefined conditions have been met. Alternatively, the artist could sell an NFT representing ownership of the artwork. Ownership and payment would transfer simultaneously in a single atomic transaction, ensuring that both parties receive what they agreed upon at the same time.

Final words

Blockchain and cryptocurrency payments are not yet universally available.

El Salvador’s adoption of Bitcoin as legal tender demonstrated one possible path toward using blockchain as a settlement layer for everyday transactions.

As blockchain technology becomes more widely adopted, it has the potential to fundamentally change how payments are processed—reducing friction, eliminating unnecessary intermediaries, and lowering transaction costs across many parts of the financial system.