CAM Budget Season Preparation Workflow
Accurate estimates prevent year-end true-up disputes — budget season starts in Q3
Each year, commercial landlords must forecast operating expenses, calculate each tenant's estimated share, and issue CAM estimate letters before the new billing year begins — typically before January 1. Inaccurate estimates create large year-end true-ups that tenants push back on, while late or deficient estimate letters can give tenants grounds to dispute the entire billing period. This workflow covers the complete budget-to-estimate process from prior-year normalization through ERP setup.
Step-by-Step Process (5 steps)
Gather Prior-Year Actual Expenses and Normalize
Q3 (July–September)Pull the final reconciled actual expenses from the just-completed reconciliation year as the base for next year's budget. Identify and remove non-recurring items: one-time capital projects expensed in the current year, insurance deductibles for unusual losses, litigation settlements, remediation costs, and any other expenses that should not be projected into future years. Document each normalization adjustment with a brief explanation — tenants may request this when reviewing estimate letters.
Common errors at this step:
- • Using unreconciled prior-year actuals before the current year's reconciliation is finalized — the base numbers may change materially
- • Not normalizing for one-time items — projecting a year that included a major roof replacement will significantly overstate future estimates
- • Using prior-year-prior-year actuals (two years old) because the most recent reconciliation is not yet complete — start the budget process early enough to use current data
Forecast Next Year's Expenses
Q3–Q4 (August–October)Apply forward-looking adjustments to each normalized expense category. Use contract-specific data where available: utility rate agreements, maintenance and janitorial contract renewal amounts, insurance renewal premium quotes, and property tax assessments or expected appeals. For categories without fixed contracts, apply category-appropriate trend factors — CPI is a reasonable proxy for general maintenance inflation, but utility costs and insurance require separate analysis. Document the methodology for each significant expense category.
Common errors at this step:
- • Applying a single flat inflation factor (e.g., 3% CPI) across all expense categories — utility costs and insurance premiums often increase at rates far above CPI
- • Not accounting for planned capital-versus-opex decisions that change the recoverable amount — a deferred maintenance project moving from capex to opex will significantly increase the CAM pool
- • Building the budget before property tax assessment notices are received for the upcoming year — property taxes are often the largest single line item and should be based on assessed value, not trended actuals
Calculate Each Tenant's Estimated Share
Q4 (October–November)Apply each tenant's pro-rata share to the projected total expense pool to determine their estimated annual CAM charge. Account for changes effective in the upcoming year: lease renewals with new base years or cap structures, expansion or contraction amendments, anticipated move-outs (reduce the denominator if leases permit an occupied-area denominator), and any new leases commencing in the new year. For tenants subject to a CAM cap, verify whether the estimated charge exceeds the cap ceiling — if it does, bill at the cap amount.
Common errors at this step:
- • Using the prior year's pro-rata share without updating for current or upcoming square footage changes
- • Not applying the cap structure when estimating — a tenant whose cap is binding will dispute an estimate above the cap ceiling
- • Projecting occupancy at current levels without accounting for known upcoming vacancies that will change the denominator and each remaining tenant's share
Prepare and Issue CAM Estimate Letters
Q4 (November–December, for January 1 effective date)Draft estimate letters that disclose the projected expense pool, the basis for the projection (prior-year actuals plus specified adjustments), the tenant's estimated pro-rata share, and the resulting monthly billing amount. Include the methodology in enough detail that a tenant reviewer can follow the calculation. Send letters by the notice method and deadline required in each tenant's lease — typically 30–60 days before the new billing year starts, meaning November or December for January 1 effective dates. Retain proof of delivery for each tenant.
Common errors at this step:
- • Missing the lease-required notice deadline — landlord may be bound by prior year's estimate amount if new estimate is not timely delivered
- • Sending estimate letters that do not disclose the underlying methodology — tenants will dispute opaque estimate letters, and some leases require disclosure of the projection basis
- • Issuing estimate letters with a monthly amount that does not match the lease-specified billing frequency (some leases require quarterly estimated payments rather than monthly)
Upload Budget to ERP and Set Up Monthly Estimated Billings
December (before January 1 effective date)Once estimate letters are issued, upload the approved budget to your ERP (Yardi, MRI, or equivalent) and configure monthly estimated billing charges for each tenant effective January 1. Verify that each tenant's estimated billing amount in the ERP matches the amount in the issued estimate letter — discrepancies create billing errors from day one of the new year. Set up any mid-year billing adjustments for tenants whose lease terms change during the upcoming year.
Common errors at this step:
- • ERP billing amounts not matching the issued estimate letters — the billing system and the letter process are often handled by different teams who do not reconcile
- • Not setting up billings for new tenants commencing January 1 — they miss the first month's estimated billing
- • Configuring the ERP with the gross total estimate instead of the net amount after any lease-required base year deduction (for base year leases)
Timeline
Budget season runs from Q3 through December. Key milestones: Q3 — normalize prior-year actuals and begin expense forecasting; October — finalize expense projections and calculate tenant shares; November — draft and review estimate letters; December — issue letters and configure ERP billings. For January 1 effective estimates, letters should be issued no later than December 1 to meet a 30-day notice requirement.
Where CapVeri Fits
CapVeri connects reconciliation actuals directly to next-year budget preparation. After completing the year-end reconciliation in CapVeri, the same expense data can be exported as the budget base for the upcoming year — with one-time items flagged for normalization. Tenant estimate calculations flow from the same lease parameters used in reconciliation, eliminating the risk of estimate letters that contradict the prior year's reconciliation methodology.
Related Resources
Free Tools for This Workflow
Automate the Most Error-Prone Steps
Export your GL data and upload to CapVeri. Independent recalculation of every tenant's reconciliation — with errors flagged before statements go out. First audit is always free.
Start Free Audit