Wiss, a forward-thinking accounting and advisory firm, has partnered with Rillet, an AI-native enterprise resource planning (ERP) platform, to deliver a co-sourced accounting model tailored for high-growth businesses. This collaboration integrates Rillet’s automation capabilities with Wiss’s strategic advisory services, enabling companies to achieve scalable, efficient financial management.
Wiss and Rillet partner to offer a co-sourced accounting model.
Combines Rillet’s AI-driven ERP with Wiss’s expert advisory services.
Automates invoicing, monthly closes, and financial reporting.
Reduces manual processes for shorter close cycles and better insights.
Provides enterprise-grade tools without in-house overhead.
Builds on Wiss’s prior success with AI-driven accounting solutions.
The partnership introduces a co-sourced model that blends Rillet’s AI-powered platform with Wiss’s accounting expertise. Rillet automates critical tasks like invoicing, monthly closes, and financial reporting, while Wiss provides outsourced support and strategic guidance. “Our partnership with Rillet illustrates the direction that Wiss is heading as a modern accounting and advisory firm focused on delivering actionable and strategic insights that go beyond just numbers,” said Paul Peterson, CEO of Wiss.
Rillet’s technology enables shorter close cycles and robust reporting through automated workflows and clean data structures. “Wiss is a firm that’s truly thinking ahead when it comes to modern finance,” said Nicolas Kopp, CEO of Rillet. “They share our belief that companies deserve better tools and better guidance.” This model offers businesses enterprise-grade solutions without the need for extensive in-house resources, ensuring flexibility as they scale.
The collaboration eliminates inefficiencies from managing multiple vendors by providing a seamless integration of software and services. “Rather than offering traditional outsourcing, Wiss has embraced a co-sourced model that pairs strategic guidance with day-to-day execution,” said Jim Duffy, President of Wiss. This unified approach delivers real-time financial visibility, allowing finance leaders to focus on strategic decision-making rather than manual tasks.
The partnership builds on Wiss’s prior success with Basis AI, which automated core accounting workflows. By integrating Rillet’s advanced ERP capabilities, Wiss continues to modernize accounting practices, offering clients deeper strategic value. This collaboration positions Wiss and Rillet to support high-growth businesses in navigating complex financial demands with efficiency and precision.
The Wiss-Rillet partnership marks a significant advancement in accounting for growing businesses. By combining AI-driven automation with expert advisory, this co-sourced model empowers companies to achieve financial clarity and scalability, redefining modern finance operations.
Headquartered in Florham Park, NJ, and with offices in New York City and Florida, Wiss is clearing the path for a new era of accounting. We bring technical experts powered with AI to meet the needs of today’s data centric, growth-minded customer. Wiss is an accounting business that goes beyond the numbers, offering our dynamic clients a full spectrum of accounting and advisory services. Every Wiss client is engaged with a tailored team of specialists who advise on specific needs at their stage of growth. Wiss taps into the full potential of what an accounting business should be—modernizing the experience for clients, teams, and the industry at large.
Rillet is the AI-native accounting platform made to tailor fit the workflows of accountants and a full replacement for legacy ERPs. Scaling and hyper-growth companies like BitWarden, Windsurf and Postscript use Rillet to enable a smarter close with native integrations, automated journal entries and AI embedded workflows. They are backed by Sequoia, First Round Capital and Creandum with offices in New York and Barcelona.
TechIntelPro empowers B2B technology decision-makers with the latest industry trends, deep insights, leadership perspectives and actionable intelligence to drive both organizational and professional milestones—and thrive on the tech pulse.