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The reconciliation ends in one number. It is either money back or money due. You trace the line item calculations across three attached addenda to make sure you didn’t misread the percentage rate tied to your shared common area maintenance costs. The printed lease page sits under your pen, its margin already dotted with small pencil notes you jotted while running the math for the third time. You’re here to separate the two most often confused reconciliation outcomes so you don’t leave money on the table or pay a charge you don’t owe.
The page in hand
The document you hold is the annual operating expense reconciliation for your commercial leased space, sent by your property manager after the close of the property’s fiscal year. Every month, you pay estimated costs for shared building expenses, including common area maintenance, property insurance, landscaping, security, and utilities for shared spaces, and this document compares those total estimated payments to the actual costs the property incurred over the same period. The difference between those two totals is the true-up amount, which falls into one of two categories: a true-up credit, meaning you overpaid your estimated costs and are owed money, or a true-up charge, meaning you underpaid and owe the property the difference. Illustrative example: If your pro rata share of annual building expenses is calculated at 8.2%, and you paid $950 per month in estimated pass-through costs for 12 months ($11,400 total), but actual total building expenses came out to $121,000, your pro rata share is $9,922, so you are owed a true-up credit of $1,478. If actual total building expenses came out to $162,000, your pro rata share is $13,284, so you receive a true-up charge of $1,884. You can typically apply a true-up credit to upcoming rent payments, request a physical check, or roll the credit into the next year’s estimated payments, depending on the terms spelled out in your lease. True-up charges are almost always due as a lump sum within 30 days of receiving the reconciliation, though some property managers allow you to split the charge into 3 or 4 monthly installments if you ask ahead of the payment deadline.

Key line that matters
You don’t need to audit every single line item on the 12-page reconciliation to first confirm whether you are looking at a credit or a charge. The only line you need to locate first is the one labeled “Net Reconciliation Amount,” usually found near the top of the first page or at the bottom of the expense summary page. A positive number next to this line almost always indicates a true-up charge you owe, while a negative number or a number listed in parentheses indicates a true-up credit owed to you, though you should double-check the fine print next to the line to confirm the formatting the property manager uses. Once you identify which type of true-up you have, use these four steps to verify the amount is accurate before you sign off:
- Confirm your pro rata share percentage matches the number listed in your base lease agreement, as property managers sometimes update this incorrectly when new tenants move into the building or vacate space during the year, or when they miscalculate the total rentable square footage of the property.
- Cross-reference the total actual annual expenses listed on the reconciliation with the summary of expenses provided in the property’s annual operating report, which you are entitled to request at no additional cost if it is not attached to the document you hold.
- Subtract any exclusions spelled out in your lease, such as capital improvements, property management performance bonuses, marketing costs for vacant space, or penalty fees the property incurred for late tax payments, from the total actual expenses before calculating your share, as these costs are often incorrectly added to pass-through expense totals.
- Multiply the adjusted total actual expenses by your confirmed pro rata share, then subtract the total estimated payments you made over the year to get your own net reconciliation number to compare to the one listed on the document.
If your calculated number matches the one on the reconciliation, you can move forward with processing the credit or charge. If it does not match, you can flag the discrepancy and request additional supporting documentation from the property manager to resolve the difference.
Where you mark it
You always want to leave a clear paper trail of your review of the reconciliation, even if you agree with the listed amount, to avoid disputes later. If you confirm the true-up credit is correct, write “Agree to credit amount of [X]” in the wide right margin directly next to the net reconciliation line, add the date, add your signature, and return the signed document to your property manager to initiate the credit processing. If you confirm the true-up charge is correct, write “Agree to charge amount of [X]” in the same margin, sign and date the document, attach your payment if you are submitting it immediately, and keep a fully scanned copy of the signed document and payment receipt for your records. If you dispute the amount, write “Dispute amount per attached calculation” next to the net reconciliation line, attach a one-page breakdown of your own math and any supporting documents that back up your discrepancy, and send the entire package back to the property manager within the dispute window spelled out in your lease, which is typically 15 to 30 days from the date you receive the reconciliation. If you use Lease Jacket to store your commercial lease records, you can upload the annotated reconciliation and all supporting documents directly to your lease file to keep all related records in a single, easily accessible location.
Next time you open this same page
You will pull this document out again when you receive next year’s annual reconciliation, when you enter lease renewal negotiations, or if you have a follow-up conversation with your property manager about a disputed amount or delayed credit payment. When you open it, you will not have to re-run all the original math, because your annotated notes and attached calculations will give you an immediate reference point for any questions that come up. If you received a true-up credit this year, you can cross-reference the amount you were paid with the amount listed on this document to make sure you received the full sum, including any applicable interest if your lease specifies that the property owes you interest on late credit payments. If you received a true-up charge this year, you can use this document to adjust your estimated monthly pass-through payments for the coming year if your property manager allows for mid-cycle adjustments, so you avoid an even larger true-up charge the following year. You can also compare the expense totals on this document to next year’s reconciliation to spot unusual year-over-year spikes in specific expense categories, such as a 40% increase in maintenance costs or a 25% jump in insurance premiums, that you can ask your property manager to explain in detail before you sign off on the next reconciliation. During lease renewal negotiations, you can reference the history of true-up amounts listed on this document and previous reconciliations to negotiate more favorable pass-through terms, such as a cap on annual expense increases, additional exclusions for costs you do not benefit from, or a lower estimated monthly payment that aligns more closely with your actual historical costs. You can also use this document to verify that any credits you rolled over from this year are applied correctly to future payments, eliminating the risk of double-billing or missing credits that fall through the cracks if you do not have clear, accessible records. Even if you move out of the space before the end of your lease term, this document will help you resolve any final expense reconciliations the property sends after your move-out date, so you only pay for the costs you incurred during your tenancy.