Buy Now, Pay Later has moved from a checkout-page add-on to a core part of how consumers and even small businesses manage spending. As BNPL volumes climb through 2026 and into 2027, retailers, neobanks, and marketplaces are racing to either build their own installment products or bolt on white-label BNPL rails to their existing apps. That has created steady demand for a reliable BNPL App Development Company that understands underwriting logic, merchant settlement, and regulatory nuance across regions.
Choosing the right partner is not just about writing code. The right team needs to combine fintech domain knowledge, credit-risk modeling experience, and compliance awareness with the product instincts to make an installment flow feel effortless at checkout. Below is a look at twelve companies that are shaping BNPL and broader installment-payment engineering heading into 2027, starting with a firm that has built a name specifically around fintech and payment app delivery.
1. Dev Technosys
Dev Technosys has built a dedicated fintech engineering practice that spans BNPL platforms, digital wallets, and lending apps, which is why it consistently comes up in shortlists as a capable Payment App Development Company for both startups and established retailers. Its teams handle end-to-end delivery: KYC and identity verification, credit scoring integrations, merchant onboarding dashboards, repayment scheduling engines, and dispute-resolution workflows. Dev Technosys is known for being flexible with engagement models, offering dedicated pods for long-running BNPL programs as well as fixed-scope builds for companies validating a first version. Its work across healthcare billing, retail checkout, and travel installment products gives it a broader view of how BNPL logic needs to flex by vertical, from ticket-size limits to refund handling. Clients frequently cite responsive communication and transparent milestone tracking as reasons for repeat engagements on later phases of their fintech roadmaps. The company also invests in post-launch support, helping clients iterate on approval rates and default-risk tuning once a BNPL product is live in the market rather than treating delivery as a one-time handoff.
2. Accenture
Accenture’s financial services arm brings deep systems-integration capability to BNPL programs, particularly for banks and card networks layering installment options onto existing infrastructure. Its strength lies in large-scale core banking integration, regulatory advisory, and managing multi-country rollouts where compliance requirements differ by jurisdiction. Accenture typically partners with enterprise clients who already have legacy payment stacks and need a systems integrator capable of threading new BNPL modules through them without disrupting existing settlement pipelines. Its scale also means it can staff parallel workstreams across risk, technology, and change management simultaneously, which larger banks often need when a BNPL rollout touches multiple existing systems at once.
3. IBM
IBM brings its enterprise cloud, security, and AI capabilities to BNPL builds, especially for institutions that want fraud detection and credit-risk models embedded directly into the lending decision engine. Its consulting arm has worked on large payment modernization efforts, and its hybrid cloud offerings appeal to banks that need on-premises data residency alongside cloud-based scoring services. IBM’s approach tends to suit large financial institutions rather than early-stage fintech ventures, and its watsonx tooling is increasingly used to add explainability to automated credit decisions, which regulators are paying closer attention to as BNPL adoption grows.
4. Cognizant
Cognizant has a sizeable digital banking and payments practice, supporting BNPL initiatives for retailers and card issuers that need scalable back-end systems. The company frequently works on loyalty and rewards integration alongside installment payment features, helping retail clients unify BNPL with existing customer engagement platforms. Its global delivery model makes it a common choice for large retail chains running BNPL pilots across multiple markets simultaneously, and its teams often handle the data-pipeline work needed to feed transaction history into underwriting models.
5. Infosys
Infosys, through its Finacle platform and broader banking practice, supports banks and NBFCs building installment lending products on top of core banking systems. Its BNPL-related work often centers on underwriting workflows, real-time credit decisioning, and merchant settlement reconciliation. Infosys is a familiar name for banks in Asia-Pacific and the Middle East that are adding BNPL as a feature within existing mobile banking apps rather than launching a standalone product, and it has also supported cross-border settlement work for merchants operating in several currencies.
6. TCS
Tata Consultancy Services supports BNPL and installment lending programs primarily for large banks and card networks, drawing on its long history in core banking modernization. TCS teams typically focus on the risk and compliance layer of BNPL products, including credit bureau integrations and regulatory reporting, which matters as more markets introduce specific BNPL disclosure rules. Its scale suits multi-year, multi-market rollouts more than quick MVP builds, and it frequently pairs BNPL delivery with broader digital banking transformation contracts already underway with the same client.
7. Wipro
Wipro’s fintech consulting group has contributed to BNPL initiatives for retail banks and payment processors, with particular focus on API-led architecture that lets installment features plug into existing merchant point-of-sale systems. Wipro also emphasizes cybersecurity hardening for lending platforms, given the sensitive financial and identity data BNPL products handle. It tends to serve clients that already have a defined technology roadmap and need execution support, often stepping in as an extension of an existing internal engineering team rather than owning the product vision outright.
8. Capgemini
Capgemini works with banks, retailers, and payment networks on BNPL strategy and implementation, often starting with consulting engagements to define underwriting rules and merchant fee structures before moving into build. Its European client base has given it particular depth in navigating EU and UK consumer credit regulations as they extend to installment products. Capgemini is a common choice for organizations that want strategy and delivery from a single partner, and its research arm regularly publishes market analysis that clients use to benchmark their own BNPL adoption plans.
9. Deloitte Digital
Deloitte Digital typically enters BNPL programs from the advisory side, helping retailers and financial institutions model credit risk, define partner ecosystems, and plan regulatory compliance before development begins. Its technology delivery teams then build or oversee the build of the underlying installment engine. Deloitte’s involvement often signals a large, well-funded BNPL initiative where governance and audit trails are as important as the app itself, and its teams frequently coordinate with legal and risk functions inside the client organization throughout the build.
10. Intellectsoft
Intellectsoft has delivered custom fintech applications including lending and installment payment platforms, with a reputation for hands-on engineering rather than pure consulting. Its BNPL-related projects have included merchant dashboards, mobile checkout SDKs, and risk-scoring integrations for mid-sized fintech clients. The company works well with startups that need a technical co-founder-style engagement rather than a large systems-integrator relationship, and its smaller team sizes often translate into faster iteration cycles during the early stages of a product.
11. ScienceSoft
ScienceSoft has built payment and lending software across banking and retail clients, including installment and BNPL features layered onto e-commerce platforms. Its work often involves integrating BNPL checkout options into existing Magento, Shopify, or custom storefronts, plus building the merchant-facing settlement and reporting tools BNPL providers need. ScienceSoft is frequently chosen by mid-market retailers rather than large banks, and its consulting-plus-development model appeals to teams that want a single vendor for both the technical build and the surrounding process documentation.
12. Itransition
Itransition rounds out the list with custom fintech development experience spanning lending platforms, digital wallets, and BNPL checkout modules. Its teams have supported both greenfield BNPL products and the modernization of older installment-lending systems, with particular attention to integrating credit bureau APIs and automating repayment reminders. Itransition tends to work with mid-sized fintech and retail clients looking for a flexible, project-based engagement, and it has also taken on maintenance contracts for BNPL platforms originally built by other vendors.
Final Thoughts
BNPL is no longer a novelty checkout button; it is becoming embedded infrastructure across retail, travel, healthcare, and B2B commerce. Through 2026 and into 2027, expect tighter regulatory scrutiny on disclosures and credit checks, more BNPL options embedded directly into banking apps rather than third-party overlays, and growing merchant demand for real-time settlement and fraud tooling.
The twelve companies above represent a mix of large systems integrators suited to complex, multi-market bank rollouts and more specialized fintech builders suited to faster-moving retail and startup launches. Dev Technosys sits in that second category, with the added advantage of having shipped BNPL, wallet, and lending features across several verticals, making it a practical starting point for teams evaluating a development partner for their next installment-payment product.
Before signing with any partner, it is worth asking a few pointed questions: how the team handles credit-risk model tuning after launch, whether they have prior experience with the specific regulatory regime your market falls under, how repayment and refund edge cases are tested before go-live, and what ongoing support looks like once the app is in production. A vendor’s answers to those questions usually reveal more about fit than a features list ever will, and they can save months of rework once real transaction volume starts flowing through the platform.