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CPI (Consumer Price Index) adjustments update recurring costs based on an index value. Tango supports two setup methods and can integrate with a rent index source for US leases.

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CPI setup: Option 1 — Inclusive of recurring expense

In this option, the indexed rent calculation is built directly into the recurring expense record.
1

Navigate to the recurring cost

Go to Lease Details → Recurring Costs and select the cost you want to index (for example, Base Rent).
2

Open the CPI/Indexed Rent tab

Click the CPI/Indexed Rent tab on the right side of the page.
3

Configure the index

  • Index — select the index to use (for example, CPI – All Urban Consumers – South)
  • Previous Index Value — the base index for the adjustment
  • Current Index Value — the new index value
  • Next Adjustment Date and Index As Of Date
  • Floor Increase % and Ceiling Increase % — if caps apply
  • Frequency — how often the adjustment occurs (for example, Annually)
  • Index Multiplier — applied against the calculated adjustment
  • Payment Types to Include — additional payment types to include in the calculation
4

Save

Click Save.

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CPI setup: Option 2 — Separate from recurring expense

In this option, a separate CPI-Variable recurring cost record holds the indexed component, keeping the fixed and variable amounts distinct.
1

Create the fixed rent line

In Lease Details → Recurring Costs, click New and add the base rent for the full term with the fixed period amount.
2

Create the variable CPI line

Click New again. Set the Payment Type to CPI - Variable (or CPI – Schedule if the variable component must be included in straight-line accounting). Set the Period Amount to $0.00 and the Adjustment Method to CPI/Indexed.
3

Configure the index on the CPI line

With the CPI - Variable record selected, open the CPI/Indexed Rent tab and fill in the same index fields as Option 1. In Payment Types to Include, select the fixed rent line so the adjustment calculates against it.
4

Save

Click Save.

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Apply a CPI adjustment

1

Enter the current index value

Navigate to the recurring cost, open the CPI/Indexed Rent tab, fill in the Current Index Value and date if empty, then click Save.
2

Calculate the adjustment

Click Calculate Adjustment. The pop-up shows four sections:
  1. Current recurring cost schedule and latest processed payments
  2. Index information used for the calculation
  3. New recurring cost details (new amount, start date)
  4. Retroactive payment section — shown only if the change is effective before the last processed payment
3

Review and confirm

Review the calculated increase, the new recurring cost start date, and any retroactive catch-up amount. Adjust the catch-up effective date and remittance message if needed.
4

Apply the update

Click Update. The system ends the old recurring cost and creates a new one at the adjusted amount. A catch-up recurring cost record is also created if applicable.
5

Record the change

Go to Lease Details → Change History. A record with change type Data Change – Financial is auto-created. Add the change sub-type, check Rent Impact, add comments, and save.
The catch-up payment gets its own recurring cost record so it can be included in accounting schedules if needed.