What Nucleus365 does

Nucleus365 Limited is a UK-based, FCA-authorised payment institution (Firm Reference Number 925337) operating a cross-border payment platform for merchants in both established and emerging markets. The company, founded in 2021 and headquartered in London, integrates banking, issuing, acquiring, and reconciliation into a single centralised system that supports transactions across 140+ currencies and 180 receiving countries. Its core product set comprises a cross-border payment platform, foreign exchange services, and fraud management, with security features including SSL/TLS encryption, MFA, AML transactional screening, ISO 27001 alignment, and UK GDPR-compliant data handling.

The business generates revenue through transaction-based fees on payment processing, FX conversion margins, and — more recently — white-label payment orchestration enabled by a strategic partnership with Paysecure announced in March 2026, which adds AI-driven smart routing, dynamic checkout customisation, and access to 500+ payment connections. Nucleus365 serves three primary customer segments: merchants in established markets expanding internationally, merchants in emerging markets accessing global financial infrastructure, and B2B enterprise merchants in the UK requiring orchestrated payment infrastructure. The company operates a hybrid go-to-market combining a self-service portal (panel.nucleus365.io) with direct enterprise sales via contact forms. The company's website has redirected to kalpixpay.com, indicating a commercial rebrand while the FCA-regulated Nucleus365 Limited entity remains the legal operating company.

With 11–50 employees and no disclosed funding rounds, named customers, or revenue figures, Nucleus365 appears to be in early commercial stage; the Paysecure partnership and rebrand are the most consequential recent strategic moves and signal intent to broaden the product surface and customer reach under a refreshed brand identity.

Name

Nucleus365

Legal name

Nucleus365 Limited

Website

https://nucleus365.com

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

11–50 employees

Short description

Nucleus365 is an FCA-authorised UK payment institution that runs a cross-border payment platform offering FX in 140+ currencies, fraud management, and — via a Paysecure partnership — payment orchestration for merchants and B2B enterprises in established and emerging markets.

Ownership category

akta.pro rank

Product category

Cross-Border Payment Processing

NAICS

Financial Transactions Processing, Reserve, and Clearinghouse Activities (522320), Financial Transactions Processing, Reserve, and Clearinghouse Activities (52232)

SIC

Finance Services (6199), Functions Related To Depository Banking, Nec (6099)

akta.pro primary industry

Cross-Border FX, Multi-Currency & Treasury for Payments (FSAGABAK)

akta.pro secondary industries

Cross-Border & FX Payments Platforms (BPAMAFAK), Card-Based Cross-Border Payments & FX Settlement (FSAMAIAD), Embedded FX & Cross-Border Treasury (FSAGALAG), Card Issuing Platforms (Issuer Processing) (FSAGABAD)

Keywords

• Cross-border payments
• Foreign exchange services
• Payment processing platform
• Fraud management solutions
• Payment orchestration

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Operations, Personnel, Marketing or Sales, Infrastructure

Revenue model

1. Payment Processing & Transaction Fees: Revenue generated from processing cross-border payments and transactions through the platform, serving merchants in established and emerging markets.
2. Foreign Exchange Services: FX services in 140+ currencies including cross-border settlements, invoice payments, and supplier payments globally, generating revenue through exchange rate margins and conversion fees.
3. Payment Orchestration (via Paysecure Partnership): White-label payment orchestration services providing AI-driven smart routing, dynamic checkout, and access to 500+ payment connections, strengthening B2B payments infrastructure.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels2 records

Core offering

Nucleus365 operates an FCA-authorised cross-border payment platform that integrates banking, issuing, acquiring, and reconciliation into a single system. It delivers FX services in 140+ currencies, fraud detection and risk management, and (via the Paysecure partnership) AI-driven payment orchestration across 500+ connections, enabling merchants in established and emerging markets to send, receive, and reconcile international payments.

Product overview

Nucleus365 operates as a unified financial services platform combining three core products: a Cross-Border Payment Platform (the central infrastructure), Foreign Exchange Services (providing FX in 140+ currencies), and Fraud Management (with real-time monitoring and AML screening). The platform integrates banking, issuing, acquiring, and reconciliation into a single system. Payment Orchestration is offered as a white-label add-on via the Paysecure partnership, enabling AI-driven smart routing and dynamic checkout across 500+ payment connections.

Differentiator

Problem solved

Functional benefit

Products and services

• Cross-Border Payment Platform
• Foreign Exchange (FX) Services
• Fraud Management
• Payment Orchestration

Quantifiable outcome

• Up to 40% cost reduction through AI-driven smart routing and payment orchestration
• +3 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability4 records

Feature9 records

Partnerships

One partnership is on record.

• PaysecurecoreTechnology or Integration · 30 March 2026Strategic agreement where Paysecure provides its full payment orchestration suite as a white-label product to Nucleus365. The partnership enables N365 to offer clients AI-driven smart routing, dynamic checkout customisation, and resilience protocols. The arrangement provides access to over 500 payment connections through a single integration and claims to reduce costs by up to 40%. This strengthens N365's B2B payments infrastructure in the UK and serves as a competitive advantage.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Currencycloud: Cross-border payments and FX-as-a-service infrastructure provider (now part of Visa) that enables banks and fintechs to embed multi-currency capabilities. Directly comparable to Nucleus365's cross-border FX and treasury infrastructure layer.
• dLocal: Payment processor specialising in emerging markets, enabling global merchants to accept and pay out in local currencies across LATAM, Africa and APAC. Directly comparable to Nucleus365's emerging-markets merchant segment.
• WorldRemit: Cross-border money transfer and payouts platform with strong emerging-markets footprint. Comparable to Nucleus365 on cross-border currency coverage and emerging-market merchant corridors.
• Payoneer: Cross-border B2B payments and FX platform serving SMBs, marketplaces and freelancers. Comparable to Nucleus365 on cross-border payouts, multi-currency receiving and SMB merchant cross-border use cases.
• Thunes: Cross-border payments network focused on emerging-market corridors, enabling local payouts in 130+ countries. Closely comparable to Nucleus365's emerging-markets merchant focus and 180-country receivability claim.
• Airwallex: Cross-border payments and FX platform focused on SMBs and enterprises, offering multi-currency accounts, global payments and expense management. Comparable to Nucleus365 on cross-border B2B payments, FX and integrated treasury functionality.
• Revolut Business: Business account offering multi-currency wallets, international transfers and FX for SMBs and enterprises. Comparable to Nucleus365 on FX-driven cross-border business payments, with broader consumer reach.
• Wise: Public cross-border payments and multi-currency platform serving both consumers and businesses with FX in 50+ currencies. Closest direct comparable to Nucleus365's cross-border FX and payments value proposition, but at much greater scale and with disclosed financials.

Broad incumbents

• Stripe: Global payments infrastructure provider with multi-currency processing, international cards and cross-border payouts (Stripe Connect, Stripe Treasury). Comparable in cross-border and FX capabilities but operates as a broad incumbent across all payment categories.
• Adyen: Global payments platform offering acquiring, processing and cross-border capabilities to enterprise merchants. Overlaps with Nucleus365 on cross-border and FX-adjacent functionality but at vastly greater scale and as part of a much broader product portfolio.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/nucleus365

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Nucleus365