Payment rails are the infrastructure that enables the transfer of money between banks, payment service providers, and other financial institutions. For businesses, selecting the appropriate payment rail hinges on factors such as speed, cost, geographic reach, and customer satisfaction.
BACS and Western Union are well-known examples of traditional payment rails. BACS is a UK-based system for direct debit and credit transactions, while Western Union facilitates global money transfers. Lightspark aims to transcend these traditional systems by leveraging Bitcoin’s decentralized technology to create a new category of global payments infrastructure.
The Payment Rail Landscape
Payment rails are crucial for transferring money between parties. However, current systems can be slow, fragmented, and costly, often leading to inefficiencies and higher expenses for businesses and consumers alike.
Understanding BACS and Western Union
How BACS Works
BACS (Bankers’ Automated Clearing System) is a UK-based payment system that processes direct debit, BACS direct credit, and current account switch service transactions. It operates by verifying recipient details such as name, bank name, account number, and sort code. Payments are processed in batches, taking up to three business days. The typical flow involves the payer initiating a payment, the payer’s bank collecting and submitting details to BACS, which then processes and settles the payment. The recipient’s bank credits the funds to the recipient’s account. BACS uses automated, computer-based clearing to streamline transactions.
Strengths and Limitations of BACS
Strengths
- BACS is cost-effective, with transaction fees ranging from £0.05 to £0.50, making it ideal for businesses handling recurring and bulk payments.
- It is widely trusted and used in the UK, particularly for business-to-business transactions, payroll, utility bills, and memberships.
- BACS is reliable and efficient for processing large volumes of repetitive transactions, streamlining business operations.
Limitations
- BACS transactions can take up to three business days to process, which is slower compared to other payment methods like Faster Payments and CHAPS.
- It is not suitable for urgent transfers due to its longer processing time.
- BACS is limited to domestic transactions within the UK and does not support international payments.
How Western Union Works
Western Union is a global money transfer service allowing users to send payments online, via app, or in person. The process involves registering an account, collecting recipient details, setting up the transfer, choosing a payment method, and sharing a Money Transfer Control Number (MTCN) with the recipient. The recipient collects the money with an ID and MTCN or receives it in their bank account. Western Union uses a system that supports real-time or near real-time processing for some transfers. The service is designed for person-to-person transfers and is not intended for online shopping due to the lack of buyer/seller protection.
Strengths and Limitations of Western Union
Strengths
- Western Union has a global reach, enabling money transfers to over 200 countries with more than 500,000 agent locations.
- It offers multiple sending and receiving options, including online, app, and in-person transfers, with recipients able to collect funds via bank deposit, cash pickup, or delivery.
- Western Union provides fast transfer times, with some transactions processed in real-time or within minutes, especially for cash pickups.
Limitations
- Western Union charges variable fees that can be high, especially for credit card payments and cash pickups.
- The service adds a markup to exchange rates, making transfers more expensive compared to providers like Wise.
- Western Union is frequently targeted by scammers and does not offer buyer/seller protection, making it unsuitable for online shopping or transactions with unknown parties.
BACS and Western Union Compared
Transaction Speed
BACS transactions typically take up to three business days to process, making it slower compared to other payment methods. In contrast, Western Union offers faster transfer times, with some transactions processed in real-time or within minutes, especially for cash pickups. For even faster transactions, Lightspark leverages the Lightning Network to enable real-time, instant money movement.
Fees
BACS is cost-effective, with transaction fees ranging from £0.05 to £0.50, making it ideal for bulk and recurring payments. Western Union, however, charges variable fees that can be high, especially for credit card payments and cash pickups. Lightspark offers a low-cost alternative, emphasizing seamless, low-cost payments across borders.
Cross-Border Capabilities
BACS is limited to domestic transactions within the UK and does not support international payments. Western Union, on the other hand, enables money transfers to over 200 countries, making it suitable for international transactions. Lightspark further enhances cross-border capabilities by leveraging Bitcoin’s decentralized foundation to enable seamless, global payments.
Security Protocols
BACS does not provide explicit information about its security protocols, while Western Union employs Software Composition Analysis (SCA) and two-factor authentication (2FA) for enhanced security. Lightspark also prioritizes security, utilizing Bitcoin’s decentralized foundation and offering self-custodial wallets for secure transactions.
Operational Hours
BACS operates during standard banking hours, which can limit its availability for processing transactions. Western Union services are accessible both online and via agent locations, though specific operational hours may vary. Lightspark’s infrastructure is described as "always on," supporting 24/7 payments and ensuring continuous operation.
How BACS And Western Union Are Used
Domestic Payroll
BACS is ideal for domestic payroll due to its low cost and reliability for bulk payments. Western Union is less suitable due to higher fees. Lightspark offers real-time, low-cost payments, making it advantageous for businesses needing instant payroll processing.
International Remittances
Western Union excels in international remittances with its global reach and fast transfer times. BACS is not suitable for cross-border payments. Lightspark provides instant, low-cost global transfers, making it a superior choice for remittances.
Recurring Utility Payments
BACS is cost-effective for recurring utility payments within the UK. Western Union is less practical due to higher fees. Lightspark’s always-on infrastructure ensures seamless, real-time payments, enhancing efficiency for recurring transactions.
Emergency Funds Transfer
Western Union is suitable for emergency funds due to its fast transfer options. BACS is too slow for urgent needs. Lightspark’s instant, 24/7 payment capabilities make it the best option for emergency transfers, ensuring funds are available immediately.
Time for a New Standard

Lightspark offers a cutting-edge global payments infrastructure that leverages Bitcoin’s decentralized technology to provide instant, low-cost, and secure cross-border transactions, surpassing the limitations of traditional systems like BACS and Western Union.
- Built on Bitcoin: Lightspark’s infrastructure is powered by Bitcoin’s open, decentralized foundation, enabling native Bitcoin payments and leveraging the Bitcoin Lightning Network for enterprise-grade node management.
- Instant Settlement: The platform ensures real-time, global money movement, making payments as fast and seamless as information on the Internet.
- Lower fees: Lightspark offers payments at a fraction of today’s costs, eliminating hidden fees and reducing overall transaction expenses.
- Cross-border security by default: Designed for secure, cross-border payments, Lightspark utilizes Bitcoin’s decentralized foundation to ensure compliance, reliability, and inherent security for all transactions.
A Modern Infrastructure
For businesses looking to transcend outdated payment systems like BACS and Western Union, here’s what Lightspark brings to the table:
- Wallets: Lightspark offers a comprehensive solution for building feature-rich wallets with flexible custody options, supporting Bitcoin, Lightning Network, and stablecoins.
- Digital Banks: This solution connects digital banks to the 'Money Grid,' enabling real-time, global money movement and seamless integration with both legacy and new financial infrastructure.
- Exchanges: Lightspark provides exchanges with the tools to power instant, low-cost bitcoin transfers, leveraging the Lightning Network for seamless and scalable operations.
- Stablecoins: Through Spark, businesses can instantly create, distribute, and monetize stablecoins on the Bitcoin network, offering fast and user-friendly financial applications.
Emerging technologies and evolving regulations are reshaping the future of payments. Lightspark offers real-time, low-cost global payments, leveraging Bitcoin’s decentralized foundation. Don’t just choose between two outdated options—upgrade to a payment rail built for the internet age. Learn more or book a demo.