How to Pay With Bitcoin: Lightning for Beginners

When Satoshi Nakamoto published Bitcoin in 2008, the paper was titled "Bitcoin: A Peer-to-Peer Electronic Cash System". Cash. Something you hand from one person to another, with no bank in between and nobody's permission needed.

For an Ummah spread across every country on earth, that matters. We send money to our parents, pay a brother for his work, give sadaqah to someone on the other side of the world. Every time that money crosses a border today, a bank or a transfer company takes its fee, takes its time, and can simply say no.

Savings is one job Bitcoin does well. Paying is the other. And to pay with Bitcoin in a shop, or across the world in seconds, you don't use the Bitcoin blockchain directly. You use Lightning.

A normal Bitcoin payment waits for a block, about ten minutes on average, and pays a fee that can be a few cents or several dollars depending on how busy the network is. That's fine for moving savings and useless for a coffee. Lightning is a second layer built on top of Bitcoin that settles in a second or two for a fraction of a cent, and it's how nearly every real Bitcoin purchase now happens.

How Lightning works, without the jargon

Think of a running tab between two people. You and I each put some Bitcoin into a shared pot on the blockchain, locked so neither of us can take it alone. From then on, every time you pay me, we both sign a new note saying how the pot is now split. No blockchain transaction, just a signed note, instantly. When we're finished, either of us can close the tab and the final split is settled on the blockchain.

That pot is a "channel". What turns it into a network is that payments can hop. If you have a channel with a payment provider, and the provider has one with a shop, you can pay the shop through it without trusting the provider in the middle: the payment either arrives in full or doesn't move at all.

In May 2026 the public Lightning network held about 4,900 BTC across some 41,000 channels, and a good deal more sits in private channels that the counts can't see.

You don't have to manage any of this yourself. A good wallet does it for you.

Pick a wallet: who holds the key?

It's the same question as self-custody, and it matters just as much here.

Custodial wallets hold the Bitcoin for you. Wallet of Satoshi (in its default mode), Strike and Cash App work this way. They're the easiest place to start, and for a few dollars of spending money that's a fair trade. But you're trusting a company, and companies leave countries: more than one Lightning app pulled out of the US in 2023 and 2024 while the rules for them were unclear.

Self-custodial wallets give you a seed phrase like any other wallet, and the channels are yours. Phoenix, from the French company ACINQ, is the usual reference: it opens and manages your channel automatically and shows one balance. Breez-based wallets and Zeus are other well-known options, Zeus especially for people who run their own node. Check what's available in your country's app store; Phoenix, for one, was removed from US app stores in May 2024.

Whichever you choose, the seed rules are the same as for your savings. Write it down, test it, and keep only spending money on Lightning. It's the wallet in your pocket, not the safe at home.

What it costs

There are two kinds of fee.

The first is a one-off. To receive on Lightning your wallet needs a channel with room to receive into, and the provider charges for setting it up, often around 1% of the first amount you receive plus a small on-chain fee. Phoenix shows you the cost before you accept.

After that, each payment pays a small routing fee to the nodes it passes through, usually a fraction of a percent, and on a small payment often less than a cent.

Where you can pay with Bitcoin today

More places than you'd guess, and fewer than enthusiasts claim.

In May 2025 the US burger chain Steak 'n Shake started taking Lightning payments in its restaurants, with a processor converting to dollars so the business never holds Bitcoin. That's the usual pattern: the customer pays in Bitcoin and the merchant receives local money. Plenty of online shops take it the same way, and merchants who want to keep the Bitcoin can run BTCPay Server, which is free and has no middleman.

Where a shop doesn't take it, gift-card services such as Bitrefill sell vouchers for thousands of retailers that you pay for over Lightning.

Sending money to family abroad is the other big use, and it has its own fee and fiqh questions, including the step where someone turns it into local currency at the other end.

To pay, you scan a QR code (a Lightning "invoice", a long string beginning lnbc) or send to a Lightning address, which looks like an email address: name@domain.com.

The fiqh of the fees

Routing fees are payment for a service. A node forwards your payment and is paid for doing so, which is ujrah (a fee for work), the same as a money-transfer fee. That's fine. The channel-opening fee is the same kind of thing: you pay a provider to set up a service for you.

Where I'd be more careful is a product some providers sell, often called a liquidity lease. You pay someone to keep their Bitcoin locked in a channel facing you for a fixed number of months, so you can receive payments. The money never becomes yours and you're paying for its availability over time, which starts to look like rent on money rather than a fee for work. There's a decent argument that it's still a service, since they commit capital to provide a channel and you never borrow it. I'm not certain, and I haven't seen a scholar address it. Ordinary users of wallets like Phoenix never meet this product.

One thing that isn't fiqh but will catch you out: in many countries, including the US and the UK, spending Bitcoin counts as selling it. If it's risen since you bought it, you may owe tax on the gain, even on a burger.

Spend it, or save it?

There's an old rule of thumb in economics that people spend the money they trust less and hold on to the money they trust more. Most Bitcoin holders feel the pull: why spend a coin you think will be worth more next year?

My answer is to keep the two apart. Savings in cold storage, and a small spending balance on Lightning that you top up. Using Bitcoin as money is part of what keeps it money, and it's exactly what Satoshi built it for. You don't have to spend your savings to take part, and Bitcoin's verdict is the same whether you hold it or spend it.