In general, an eight-to-16-week implementation can sound generous until the work begins. Lease documents need to be collected, accounting policies confirmed, data fields mapped and integrations tested before the first reporting cycle can run in the new system.

For corporate occupiers, the software itself is rarely the only factor shaping the schedule. A focused implementation may fit within eight to 16 weeks, while a global portfolio with multiple entities, currencies and accounting systems can take even six months or longer.

So, what determines when you can go live?

The condition of your lease data

Clean, accessible data keeps an implementation moving. If your team already has current payment schedules, amendments, renewal options and discount rates in one place, migration can begin quickly.

The timeline grows when information is split across spreadsheets, regional databases and shared drives. Each lease needs to be matched with its amendments and checked before it enters the new system. Fifty complex property leases may require more preparation than 200 standardized equipment leases.

Decisions that need to happen early

Configuration depends on decisions from finance, real estate and IT. Your team needs to confirm which entities, lease types and accounting standards are in scope. It must also define approval responsibilities, user permissions, reporting requirements and the chart of accounts.

A named project owner helps keep those decisions moving. Without clear ownership, questions about classifications, discount rates or renewal assumptions can remain open and delay later testing.

Connections to your accounting systems

Your implementation plan should account for every system that sends or receives lease data. This may include the general ledger, accounts payable tools and enterprise resource planning platforms.

Technical connection is only part of the work. Teams also need to map accounts, agree on file formats and confirm how journal entries will be transferred. Testing should show that each entry reaches the correct entity, account and reporting period.

Testing beyond the initial migration

A successful data upload does not mean the system is ready for use. Your team should test the events that occur throughout a lease’s life, including new leases, amendments, renewals, terminations and index-linked payment changes.

Running a sample reporting cycle gives finance time to compare calculations, journal entries and disclosures with expected results. It also gives users practical experience before the first live close.

Where Yardi Corom fits

Yardi Corom brings real estate and equipment lease data, administration and lessee accounting into one platform. Corporate occupiers can calculate and report under FASB ASC 842 and IFRS 16, generate journal entries and connect lease information with their core accounting systems.

Yardi also provides implementation support covering project management, data conversion, configuration, training and third-party integrations. That support can be scaled around the portfolio and the systems already in place.

The realistic timeline

Lease count provides a starting point, but data quality, portfolio complexity and decision-making speed provide the more accurate forecast. Build the schedule around those factors and leave enough time for a complete reporting cycle before go-live.

If you are planning a lease accounting software implementation, schedule a meeting with the Corom team to discuss your portfolio, data sources and integration requirements.

Yardi Corom is built for CRE tenants managing exactly this kind of complexity. It handles both lease types under ASC 842, IFRS 16 and GASB standards, centralizes lease and sublease data and integrates with your existing financial systems. If you’re ready to plan your implementation, visit our website or schedule a meeting with the Corom team.