Lease accounting for your clients, without building it yourself

If you run an accounting practice or advisory firm, lease accounting has gone from a quiet line item to a real client conversation. ASC 842, IFRS 16, and the 2026 FRS 102 amendments have pulled most leases onto the balance sheet - and your clients are looking to you for answers.

The catch: spreadsheets don’t scale, and most lease software wasn’t built with firms in mind. Here’s what to look for - and how to add lease accounting to your practice without building it yourself.

What accounting firms actually need from lease software

Forget the marketing checklist. When you’re serving multiple clients, the real requirements are simpler than vendors make them sound:

• Multi-client, multi-entity. Each client lives in their own data space. No bleed-through, no risk of mixing up portfolios.
• All three standards in one place. ASC 842, IFRS 16, FRS 102 - without a separate module or extra license per standard.
• Lives where your clients’ finance data already lives. If your clients are on Business Central, your software shouldn’t be a separate system that needs middleware.
• Audit-ready by default. Full audit trail, disclosure reports, and a paper trail for every assumption.
• Predictable cost. No per-lease fees, no per-user surprises. You need to be able to quote your clients with confidence.
• Easy to learn. Your team is already busy. The platform should be picked up in days, not months.

If a platform misses any of these, it’s making your practice harder - not easier.

Where firms run into trouble

Most lease software was built for end-customer finance teams, not for the firms supporting them. That means:

• Per-lease pricing that becomes unpredictable as clients grow
• Per-user fees that punish you for involving your team
• Standards sold separately - pay extra for ASC 842, extra for IFRS 16
• External tools that require middleware to integrate with your clients’ ERPs
• Limited multi-entity support - fine for one client, painful for ten

The result: firms either build custom spreadsheet templates (and own the risk forever), refer clients out to external lease specialists (and lose the relationship), or quietly avoid the work.

There’s a better option.

How Onederful works for accounting firms

Onederful is built natively into Microsoft Dynamics 365 Business Central and supports ASC 842, IFRS 16, and FRS 102 in one environment - at a flat €250 / $250 per month, per client. No per-lease fees. No per-user fees. No add-ons for additional standards.

For your firm, that means:

• One platform across your client base - same workflow, same reports, same training, every time.
• Native BC integration - your BC clients are ready to go on day one. No middleware.
• All three standards covered - including the new FRS 102 lessee model effective 2026.
• Disclosure reports on demand - maturity analyses, weighted-average rates, roll-forwards.
• Full audit trail - every change, every calculation, every entry logged.
• Multi-entity, multi-currency - handle complex client groups in one environment.
• Predictable pricing you can quote - no discovery call required to give a client a number.

The partner side: two ways to work with us

We support accounting firms and BC partners in two ways - pick the one that fits your practice:

• Active partner. Get product training, a demo environment, and a dedicated partner manager. You implement Onederful for your clients independently. Typical onboarding: 1–2 weeks.
• Referral partner. No training required. Introduce us to your client, and we handle the demo, sale, and implementation. You earn recurring revenue on every subscription.

Both paths come with co-marketing support, joint case studies, and recurring revenue on every client subscription. No upfront fees. No exclusivity traps.

We win when you win.

The bottom line

Lease accounting isn’t going away - and your clients will keep coming back with questions. The firms that handle it well aren’t building their own tools or referring clients out. They’re partnering with software built for the job, inside the systems their clients already use.