Wall & Fifth
KompiPay, a payments product designed and built by Wall & Fifth, on a laptop
Payment products on Stripe

Payments people trust.
Built properly.

We design and build payment products on Stripe: onboarding, checkout, payouts and subscriptions, designed so nobody is ever unsure where their money is.

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Stripe moves the money. We build what people see.Explore the approachIn frame: KompiPay

Why it matters

Payment infrastructure is solved.
Trust isn't.

Stripe handles the hard regulated parts: processing, card data and identity checks. Whether people start, finish and come back is decided by everything built around it. That's the part we design and build.

Tell us what you're building
01

Clear.

Every payment state explained in plain language, with a next action.

02

Trusted.

Restraint and precision. People decide in the first few seconds.

03

Recoverable.

Failures, refunds and disputes handled, never hidden.

Money & commerce, built by Wall & FifthKompiPayKompiBNOCShopaBlock

Where payments win or lose people

Three moments decide
whether people trust you.

What we learned building KompiPay, our own payments product on Stripe, from zero to live.

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Get people to something real first.

Verification, bank details and compliance steps usually arrive first, and they feel like risk rather than progress. On KompiPay we sequenced onboarding so people reach a working payment page they can share before they're asked for anything sensitive. The checks still happen, once there's a reason to finish them.

Read the KompiPay case study
The focus

A working first moment.

What you take forward

Onboarding people finish.

Never leave money ambiguous.

Pending, succeeded, failed, refunded and disputed all need to be visible, explained and recoverable. Underneath, Stripe's events are the record of what happened, every payment action is safe to retry so a dropped connection never charges twice, and the product reconciles what it shows with what Stripe reports.

Talk payment flows
The focus

Every state explained.

What you take forward

No double charges.

KompiPay's checkout and product pages, designed and built by Wall & Fifth

Let the interface earn trust.

Restraint, clear hierarchy and precise typography do more for conversion in a financial product than any persuasion pattern. KompiPay's visual system was built to read as credible infrastructure rather than a consumer app, with no surprise fees, no unexplained holds and no dead ends when something fails.

Explore product design
The focus

Restraint over persuasion.

What you take forward

A checkout people finish.

Choosing the right Stripe setup

Which Stripe setup
does your product need?

Most payment products use one or more of four building blocks. The right mix depends on who pays, who gets paid and how often.

Stripe Checkout.

A payment page hosted by Stripe. Quick to launch, well optimised and handles cards, wallets and local methods. Often the right first step for selling a product or taking a deposit.

  • Fastest to launch
  • Stripe-hosted, so card data never touches you
  • Cards, wallets and local methods
  • Best for straightforward payments
KompiPay checkout on two phones
KompiPay / checkout

How we build it

Map the money first.
Then build the product.

Who pays, who gets paid and what happens in between decides the Stripe setup, the screens and the edge cases. We settle it before the first screen.

01

Map the money.

Who pays, who gets paid, when, and who keeps what along the way.

02

Design the states.

Every payment state, failure and refund, each with words and a next action.

03

Build on Stripe.

Checkout, Connect or Billing, integrated so Stripe stays the record of truth.

04

Launch and reconcile.

Test real payment paths, then check what the product shows matches Stripe.

Engagement

Fixed price.
Scoped to the payment model.

A defined price for a defined build, agreed before work starts.

See how we price
First build

From£30,000

A focused payment product: onboarding, one payment flow, clear payment states and an operator dashboard.

Full product

Quoted

Marketplace payouts, subscriptions, multiple payment flows, finance reporting and integrations, scoped to your model.

Embedded Partner

From£8,000/month

Ongoing senior involvement once it's live: new payment features, conversion and the roadmap.

You own your data and the custom deliverables agreed in your contract. Reusable components and third-party software retain their licences. The proposal specifies any retained IP, licensing, hosting and exit terms before work starts.

A little more clarity

Good questions.
Straight answers.

What to know before building a payment product.

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Do I need my own payment licence to build a payment app?

For most products built on Stripe, no: Stripe processes the payments and handles card data, and its onboarding covers identity checks for the people you pay out to. Some models, such as holding customer money, lending or currency exchange, can bring their own regulatory requirements. We flag those early, and you should take specialist legal advice on them.

Should we use Stripe Checkout or a custom payment flow?

Stripe Checkout is quick to launch and well optimised, and it's often the right first step. A custom flow built with Stripe's embedded payment components makes sense when payment is part of a longer journey, like a booking, a quote or a multi-step order, and a redirect would break it. Either way, card details are collected by Stripe's own fields, not your servers.

How do marketplaces take a cut and pay sellers?

Through Stripe Connect. Sellers onboard through Stripe, customers pay through your platform, your fee is taken automatically and the rest is paid out to the seller. The product work is in onboarding sellers smoothly, showing everyone where their money is, and handling refunds and disputes fairly between the parties.

What makes a payments product feel trustworthy?

Clarity about money at every step. Each payment state (pending, succeeded, failed, refunded, disputed) needs a plain explanation and a next action, because ambiguity in a money product reads as loss. Restrained, precise design also does more for trust than persuasion. Both were central to how we built KompiPay.

How much does it cost to build a payment app?

New product builds start from £30,000. Larger payment products are quoted individually according to the payment model, onboarding, payouts, subscriptions, integrations and administration required. We agree the fixed price, scope and delivery schedule before work starts.

Have you built a payments product?

Yes. KompiPay is a Wall & Fifth-owned payments product built on Stripe. It lets creators and small businesses create a payment link in minutes and accept payments without a storefront or a developer. We designed and built its onboarding, payment creation, checkout and dashboard. We've also built commission, fee and balance tracking into custom CRMs, such as BNOC's.

Explore marketplace development
KompiPay, a payments product built by Wall & Fifth, on a laptop

Make the next move

Build a payment product
people finish using.

Tell us who pays, who gets paid and what happens in between. We'll scope the payment model, price it and build it on Stripe.

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KompiPay / Payments product