In-house payment plan software: How it works & how to choose one

Approx. 5 minutes

If you’ve ever wanted to let customers pay over time without handing the relationship – and a chunk of your revenue – to a third-party lender, you’re looking for in-house payment plans. This guide explains what in-house payment plan software actually does, how it’s different from BNPL and external financing, and what to look for before you choose a tool.

Try Paythen free to offer your own payment plans in minutes, or keep reading. Here’s what we cover:

What is in-house payment plan software?
In-house vs BNPL vs financing
Why businesses offer payment plans in-house
How in-house payment plan software works
What to look for when choosing a tool
Common use cases
Is an in-house payment plan a loan?
How to get started

What is in-house payment plan software?

In-house payment plan software lets a business offer its own pay-over-time options directly to customers, on terms the business sets, and collect each installment itself. “In-house” is the important part: there’s no outside lender approving customers, funding the purchase, or owning the payment relationship. You decide the deposit, the number of installments, the schedule, and the rules. The software handles the rest – charging cards on schedule, sending reminders, retrying failed payments, and giving customers a way to manage their own plan.

That’s a different model from the two things it’s most often confused with – buy now pay later, and financing – which we’ll break down next.

In-house vs BNPL vs financing

BNPL and financing both outsource the risk and the customer relationship. In-house payment plan software keeps both with you – and keeps more of the revenue. Here’s how the three compare:

	In-house payment plans (eg: Paythen)	Buy now pay later (BNPL)	Financing / lending
Who approves the customer	You do – no credit application or approval step.	The BNPL provider approves or declines each customer.	A credit check and loan origination process.
Who owns the relationship	You do – reminders and receipts come from you, in your branding.	The BNPL provider – they own the customer and the app.	The lender or your lending platform.
Fees	A small percentage per transaction on top of standard card processing.	Typically 6%+ merchant fee per transaction.	Interest, origination and servicing costs.
Is it a loan?	Usually no – interest-free installments, no lending.	Often yes – credit is extended to the customer.	Yes – regulated lending.
Setup	Minutes – connect Stripe and create a plan.	Application and approval to become a merchant.	Complex – built for regulated lenders.

In short: BNPL and financing take a bigger cut and take over the customer and valuable relationships you’ve built. In-house payment plan software lets you offer the same flexibility while staying firmly in control.

Why businesses offer payment plans in-house

The appeal comes down to margin, control, and customer experience.

You keep more of every sale

A BNPL fee of 6%-10% on a $2,000 course is $100–$120 gone on every transaction. Running the same plan in-house on top of standard card processing costs a lot less. It’s also not available to many businesses across many industries.

You set the terms

You decide who gets a plan, how large a deposit to require, how many installments, and over what period. Nobody declines your customer at checkout because of an external credit-approval model you can’t see and don’t control.

You own the customer relationship

Reminders, receipts, and follow-ups come from you (through Paythen), with your logo and branding – not from a lender’s app. That matters for repeat business and trust.

You reduce abandonment on higher-priced items

Splitting a large total into manageable installments removes the single biggest barrier to purchase for services, courses, events, travel, and high-value goods.

How in-house payment plan software works

Most tools follow the same basic flow, though the details differ:

You create a plan. Set the total, deposit, installment amount or count, and billing frequency (weekly, monthly, or custom dates). Some tools let each customer choose their own schedule within limits you set.
You share it. Customers reach the plan through a shareable payment link, your checkout, or an embedded form. The better tools work across your website, ecommerce store, and third-party forms.
The customer signs up and pays the first installment. Their card is securely stored for future payments.
The software collects automatically. Each installment is charged on schedule, with reminder emails beforehand and automatic retries and follow-ups if a payment fails.
The customer self-serves. Good software gives customers a secure page to see what they’ve paid, what they owe, update their card, pay early, and download receipts – without emailing you.

The value of the software is mostly in steps 4 and 5. Anyone can send an invoice; the hard parts are collecting reliably over months, minimizing failed payments, and doing it without manual admin.

What to look for when choosing a tool

Not all “payment plan” tools are built for running plans in-house. A few things separate the ones that save you time from the ones that create it:

Flexible plan types

Look for more than fixed monthly installments – weekly and custom intervals, date-based plans where everyone pays on set dates (useful for events and travel), layaway-style plans, deposit-plus-installments, and options that let the customer choose their own schedule within your rules. See some examples of different types of plans here.

Automated retries and reminders

Reminders, automatic retries, and failed-payment follow-ups are what actually keep your default rate low. This is the feature that pays for itself.

Customer self-serve pages

If customers can update cards and see their balance and receipts themselves, your support load stays flat as you grow. Good tools will make it easy for customers to repay early and even more, all without requiring manual support.

Works where you sell

Shareable links, checkout integration, and connections to WooCommerce, Shopify, and form tools mean you’re not locked into one channel. You want a tool that can adapt and move with you as your business evolves and changes.

Transparent, usage-based pricing

A percentage-per-transaction model with no fixed monthly fee means you only pay when you actually collect. Watch for platforms that charge monthly regardless of volume – they’re less aligned with your success.

Built on trusted payment rails

Tools (like Paythen) that run on Stripe inherit its security and PCI compliance, and let you keep payouts flowing to your own account. Stripe powers almost 2% of the world’s GDP so you’re in excellent hands.

No lending overhead

If the tool markets itself as financing or lending software, it’s likely heavier than you need – and may pull you into credit-check and compliance workflows that in-house plans are meant to avoid.

Common use cases

In-house payment plans fit almost any business selling something big enough that customers appreciate spreading the cost:

Course creators and educators – split tuition across the length of a program. (See payment plans for educators.)
Events and travel – date-based plans where everyone is paid up before the event or departure.
Coaches and consultants – package fees paid over the engagement.
High-value goods – jewellery, machinery, and equipment, sold via layaway or installments.
Dental, clinics, and services – in-house plans for treatment, without a third-party financing partner.

Is an in-house payment plan a loan?

Usually not. When you spread a purchase over a few interest-free installments and collect them yourself, you’re offering a payment plan, not extending credit. There’s no interest, no credit application, and no lender. That’s a meaningful distinction, because it keeps you clear of most lending regulation and lets you set the whole thing up in minutes rather than months.

How to get started

You don’t need a developer or a lending license to offer payment plans in-house. With a tool like Paythen, you connect your Stripe account, create a plan with the deposit and schedule you want, and share the link – anywhere you do business. If you do business through an eCommerce site or any other workflow, that’s just a few minutes of setup too. Reminders, retries, and self-serve pages are handled for you, and you only pay a small percentage when a customer actually pays. We only make money when you do.

See how Paythen’s payment plans work, browse live examples, or start your free 7-day trial. If you need a hand setting up, just reach out via the chat icon and we’ll help you get running.

Increase sales by offering easy payment plans in one minute.

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We’ll ask you to connect your Stripe account or create a new one once you sign up. Paythen works with Stripe.

Easy payment plans

Offer your customers a flexible payment plan set by you, to increase conversions and sales.

Easy payment links

An easy to share payment link that works on any website and any device - matching your brand.

Flexible plan types

Offer payment plans, pay your way plans where customers can choose, subscriptions or one-off payments.

Automated reminders & emails

We automatically send handy reminders before payments & follow-ups if a payment fails.

Change payment info easily

Your customers can change their card info anytime they want, with zero time spent by your team.

Integrate with other apps

Send Paythen data to over 7,000+ other apps with our Zapier integration.

Discover more features, check out these examples or see our FAQs

Flexipay – sell more by giving customers choice

Payment Pages

If you’ve ever wanted to give your customers more say in how they pay — without losing control over key aspects, Flexipay offers exactly that. It’s our most flexible plan type, and it puts the power of choice in your customers’ hands, within the rules you set. This helps you attract and sell to more customers.

Flexipay plans let each of your customers design their own payment schedule when they check out. You define the rules — the minimum deposit, the completion timeframe or date, and whether to allow customers to pay in full — and each customer picks what suits them. No two customers need to be on the same schedule. One might pay weekly over 3 months, another monthly over 6 — all from the single plan link you create. 🙌

Try a live Flexipay demo here to see exactly what your customers experience.

You’re in control

Flexibility for your customers doesn’t mean ambiguity for you. As the business owner, you set the key parameters like:

Minimum payment — what customers need to pay upfront – $100, 10%, etc.
Completion timeframe or date — all payments must be completed within a specific timeframe from sign up (eg: 12 months) or a specified date (eg: 28 January 2027)
Allow pay-in-full — decide whether you want to offer the option to pay in full
Pay-in-full discount — optionally reward customers who pay the full amount upfront

Flexipay also supports ecommerce and other scenarios where each customer has a varying total via templates. This lets you bring the power of Flexipay plans to any workflow you have including WooCommerce, Shopify and almost anything else via Zapier.

Who is it for?

Flexipay is a great fit for businesses where customers have varying budgets or cash flow preferences — and where a one-size-fits-all plan isn’t ideal. Some examples include:

🎓 Coaches & course creators — let students choose a deposit and pace that suits their cashflow

📸 Photographers & creatives — offer payment flexibility without lengthy back-and-forth on custom plans

🏋️ Fitness & wellness — training packages and retreats where clients have different financial rhythms

🎪 Events & experiences — sell tickets or packages months in advance and let customers spread the cost their way, while having a hard completion date for everyone x days before the event

🛠️ Service businesses — take on clients who need flexibility without abandoning your payment terms

If you currently use our Pay Your Way plans for flexibility, Flexipay takes that further — giving customers true control over their own schedule, not just a choice between two fixed options. Talk to us about migrating your existing Pay your way plans to Flexipay if this suits your needs better.

As always, we’d love to hear what you think. If you have questions or feedback, reach out via the chat icon 💬

👉 Try the Flexipay demo
👉 Flexipay setup instructions

New Find Customer Zapier action allows for more automated workflows

Zapier

If you use Paythen with your ecommerce store either via the email based flow (eg: for Shopify) or our plugin (like WooCommerce), the flow typically involves customers completing the checkout with the payment plan option chosen, and then either being shown or emailed their payment plan link.

For WooCommerce, the order status automatically changes if they complete their payment plan payment, but for email based workflows like Shopify, Webflow, Eventbrite and any others, once a customer is emailed their payment plan link, you had to manually check if they had paid by logging into the Paythen dashboard, and then manually following up.

You can now fully automate this process with our new Find Customer action available in Zapier. In your zap where you send customers the Paythen payment plan link, just add a short delay after the current flow (eg: wait for 10 minutes) and then use the Find Customer action to check if the customer exists in Paythen. If they do, you can update your eCommerce store order – eg: adding a note and/or tag in Shopify and passing the customer’s Paythen link for reference or in other platforms, you can update the status of the order directly too.

If the customer doesn’t exist, this means they haven’t signed up to their payment plan yet – you can set it up in Zapier to send them a reminder with custom text in it and include the payment plan link again. You can then continue to do this multiple times for a few hours or even a few days after the order was placed, and cancel the order and more as needed if the customer doesn’t pay eventually.

The same setup works when you’re using Paythen with any third party form tool, or any other custom workflows where you show / email them the payment plan link. You can now just add a short delay, then check if they have paid and exist as a customer in Paythen, and if not, trigger one or more reminders and take further steps as needed.

This process required manual admin till now – but can now be fully automated, saving you time. To get started, open your Zapier account and in the action step, choose “Find Customer”. You can modify your existing zap by adding a delay after you send the payment plan link, then checking if the customer exists in Paythen, and then either updating the order in your eCommerce platform or other system (find order and add a note in Shopify for example), or if not found, you can then trigger another reminder email with custom text. You can then set up further steps to check again, say in 1 hour, 4 hours, 2 days, etc to continue automated follow-ups as needed.

If you’re not sure how to do this with your workflow, just reach out to us via the chat icon and we’ll help you get set up.