Ontario Calculator

Ontario Rent Arrears Calculator

Build a Landlord and Tenant Board–style arrears ledger under the Residential Tenancies Act, 2006. The tool charges monthly rent separately from any post-termination daily compensation, applies payments in date order, and - only when you say so - credits the rent deposit and its interest as an end-of-tenancy or order-based credit. Optionally, compute simple interest on an existing order.

Inputs

All amounts in Canadian dollars (CAD).

Rent arrears period

Monthly rent (CAD)

Rental due day of month (1–31, optional)

Arrears start date

Arrears end date

Prorate a partial final period by day count.

Whether prorating is appropriate depends on the tenancy agreement, the notice given, any order made, and the applicable law. This option is a modelling choice, not a legal conclusion.

Compensation after termination period

Include daily compensation (RTA ss. 86 / 88)

The first compensation day must be strictly after the rent arrears end date so no calendar day is charged twice. Compensation is charged inclusively - both the first and last compensation days count. Leave the daily amount blank to use monthly rent × 12 ÷ 365.

Rent deposit and deposit interest (RTA s. 106)

How should the rent deposit be treated?

Do not apply in this calculation. Default. Use this while the tenancy is continuing (for example, an L9-style calculation) - the deposit stays held for the last rental period under s. 106(10).Apply as a credit because the tenancy is ending or has ended. Reflects the typical L1 / L10 pattern where the Board deducts the deposit and accrued interest under s. 87(4). The credit is dated at the arrears end date.Custom credit assumption. Choose the credit date yourself. Match the governing order, agreement, or legal basis; the calculator does not decide whether the credit legally applies in your case.

Whether and when the deposit and its interest are actually credited depends on the tenancy status, the application type, and the Board's order. This tool applies the assumption you select.

Payments

Payments received

Tenant payments applied in date order.

Other amounts specifically ordered

Ordered amounts

For example, the LTB filing fee expressly ordered by the Board.

Interest on an existing order (optional)

Compute simple interest on an existing order

For example, postjudgment interest on an amount an order has already fixed. Interest is separate from the arrears ledger above and is calculated on the amount you enter, at the rate you enter, for the period you specify.

Result

Rent charged: $0.00
Daily compensation: $0.00
Other ordered amounts: $0.00
Credits (deposit + interest): $0.00
Payments received: $0.00
Balance before order interest: $0.00

Rent, compensation, credits and payments ledger

Ledger sorted by date showing rent charges, daily compensation, other ordered amounts, deposit and interest credits, payments received, and the running balance.
Date	Description	Rent	Compensation	Ordered	Credit	Payment	Balance
No entries yet.

Estimate only

Calculations are estimates. Laws, rates, and rules can change. Obtain professional legal or financial advice before relying on any result.

About this calculator

Residential rent arrears in Ontario are governed by the Residential Tenancies Act, 2006 (RTA) and enforced through the Landlord and Tenant Board (LTB). Rent accrues at the monthly rate on each rental due date and is reduced by amounts the tenant has actually paid.

Section 106 of the RTA governs the last month's rent deposit and the interest owed to the tenant on it. Under s. 106(10), the deposit is generally applied to the last rental period before the tenancy ends, not automatically against ongoing arrears. In a termination-based Board order (typically an L1, and sometimes L10 for a former tenant), the Board generally deducts the deposit and its accrued interest under s. 87(4). Where the tenancy is continuing (for example, a stand-alone L9 arrears application), the deposit is generally not deducted. This tool leaves the choice to the user; whether the deposit actually credits in a given case depends on the application, the tenancy status, the order, and the facts.

Once a tenancy is terminated, sections 86 and 88 of the RTA allow the landlord to claim compensation for each day the former tenant remains in possession. The calculator charges that compensation as a strictly post-arrears period, inclusive of both the first and last compensation day, so no calendar day is charged twice.

Worked example

Facts. Rent of $2,200 due on the 1st, unpaid for six months. The landlord holds a $2,200 deposit and $55 of accrued deposit interest. The tenant pays $1,500 mid-period and the LTB filing fee ($186) is ordered. After a valid termination the tenant remains in possession for 15 additional days (1–15 July, inclusive).

Rent charged. 6 × $2,200 = $13,200.

Compensation. 15 days × ($2,200 × 12 ÷ 365) ≈ $1,084.93.

Deposit treatment. Because the tenancy has ended, the example uses the "Apply as a credit because the tenancy is ending or has ended" option, which posts the $2,200 + $55 = $2,255 credit at the arrears end date. If instead you were modelling an L9 arrears calculation with the tenancy continuing, you would leave the deposit set to "Do not apply in this calculation".

Balance. Rent + compensation + ordered fee − deposit − deposit interest − payment received.

Frequently asked questions

Official sources

Last reviewed: 19 July 2026Spotted an error? Suggest a correction →