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Free utility reconciliation tool

RUBS Calculator

Rebuild the math behind a Ratio Utility Billing System from the property/master utility expense, excluded costs and the exact allocation units used for your household. If you enter the actual statement total, the tool also shows the difference from the modeled amount.

Use the allocation inputs from the property disclosure.

RUBS can use occupancy, square footage, bedrooms or another weighting system. Enter the exact allocation units used for your bill rather than converting them to a different method.

Enter the three required allocation inputs.

Provide the source utility expense, total property allocation units and your household allocation units. No sample expense, weighting or admin-fee values are preloaded.

Use the allocation units stated by your property. RUBS formulas vary; occupancy, square footage, bedrooms and other weighting methods are not interchangeable. This calculator checks math, not legality.

How to use it

Start with the provider or master bill

Enter the source utility expense before allocation. If your property removes common-area, shared-facility, vacancy or another non-resident amount, enter that exclusion separately so the calculator can show the resident allocation pool.

Use the property’s formula, not a guessed one

RUBS can use occupants, square footage, bedrooms, bathrooms or a custom weighting system. Enter the same allocation units the property says it used. Do not convert one weighting method into another just to make the calculator fit.

Compare the modeled amount with the statement

The actual billed amount is optional. When entered, RentBillCheck shows `actual − modeled`, which gives you a clean arithmetic checkpoint for asking about a fee, adjustment or missing formula input. A difference is a question to investigate, not automatic proof that the bill is wrong.

Ask for these inputs if they are missing

  • The provider/master utility expense.
  • Any common-area, shared-facility, vacancy or other exclusion before allocation.
  • The total allocation units in the pool.
  • The allocation units assigned to your household.
  • Any separate billing or administration fee.
  • The actual tenant statement and any prior-period adjustment.

What this calculator does not decide

It does not determine whether the allocation method itself is permitted, whether the source inputs are accurate, or whether a separate fee is allowed. Those are state, local, lease and evidence questions.

Utility Billing Evidence Checklist
Organize the master bill, allocation disclosure, meter/formula records and correspondence.Utility Rules by State
Compare exact state source layers only where a real allocation, metering, disclosure or fee rule is verified.
Math check only. If your actual property uses a more complex formula, use its written calculation rather than forcing it into this model.