Small Claims Court Calculators

Free Ontario Small Claims Court Calculators

Before you sue — or defend a claim — the questions that keep you up at night are almost always about numbers. Is my claim even worth filing? How much interest can I add? What are the filing fees, and can I get them back if I win? Have I already run out of time to sue? Our free Ontario Small Claims Court calculators answer exactly these questions, using the current rules of the Small Claims Court, the Courts of Justice Act, and Ontario’s Limitations Act. There’s no cost, no sign-up, and no obligation — just a fast, realistic estimate so you can decide whether a claim is worth pursuing before you spend a dollar filing it.

Ontario’s Small Claims Court hears disputes up to $50,000, exclusive of interest and costs. It’s designed to be accessible to self-represented people, but the money math — interest, cost recovery, jurisdiction limits, and deadlines — trips up plaintiffs and defendants alike. These tools turn that math into a clear number.

What You Can Estimate

Claim Value & Interest

Start with the Small Claims Court Calculator to estimate your total claim, filing fees, and potential recovery. Because interest often adds up to more than people expect, the Pre-Judgment Interest Calculator works out what you’re owed from the date your loss arose to judgment under the Courts of Justice Act, and the Post-Judgment Interest Calculator tracks interest that keeps accruing on an unpaid judgment.

Deadlines & Cost Recovery

Ontario’s basic limitation period is short, so the Limitation Period Calculator is often the most important tool on this page — miss the deadline and even a strong claim can be barred entirely. If you win, the Court Cost Recovery Calculator estimates the filing fees, disbursements, and representation costs you may recover. Being sued yourself? The Counterclaim Calculator nets your counterclaim against the original claim and checks the $50,000 jurisdiction limit.

Common Dispute Types

Some disputes come up again and again, so we built calculators for them: the Contractor Dispute Calculator for unfinished or defective renovation work, the Neighbour Dispute Calculator for property damage, fence, tree, and boundary issues, and the Service Dispute Calculator for a service you paid for but didn’t properly receive.

Before You File: Send a Demand Letter

Once you know what your claim is worth, the recommended next step is usually a formal demand for payment. Our Ontario Demand Letter Generator builds a clear, court-ready letter from your details in minutes — it often resolves the matter without a claim, and creates a record that supports a costs award if you do end up filing. See our guide to demand letters for what to include and how to send it.

Why Use an Ontario-Specific Calculator

Small Claims procedure is provincial, and the details matter. Ontario sets its pre-judgment interest rate quarterly, caps recoverable representation fees under Rule 19.04, and enforces a $50,000 monetary ceiling that a generic calculator won’t know about. Our tools are built around those specific rules, so your estimate reflects what an Ontario Small Claims deputy judge would actually work with — not a rough national average.

• Built on Ontario’s rules — the Courts of Justice Act, Limitations Act, and current fee schedule.
• 100% free and private — no account, no payment, nothing shared.
• Plaintiff or defendant — the same tools help you sue or defend with eyes open.
• Decide before you file — see the realistic recovery before you spend on court fees.

Before You File: A Quick Reality Check

A judgment is only as good as your ability to collect it. Before filing, it’s worth estimating not just what you’re owed but whether the other side can actually pay — a winning claim against someone with no assets or income can be difficult to enforce. It’s also common to send a demand letter first; many disputes settle once the numbers are laid out clearly, which the calculators help you do. If your claim exceeds $50,000, you may need to either abandon the excess to stay in Small Claims Court or proceed in the Superior Court of Justice instead.

The Settlement Conference: Where Most Cases Resolve

Ontario Small Claims Court builds in a mandatory settlement conference before trial, and it’s where a large share of claims actually resolve. A deputy judge reviews the case with both sides, flags weaknesses, and encourages a resolution — often saving everyone the time and cost of a full trial. Walking into that conference with clear, defensible numbers is a real advantage: when you can show exactly how your claim value, interest, and recoverable costs were calculated, your position looks credible and settlement offers tend to improve. That’s a practical reason to run these calculators early, not just before filing. Even if you’re the defendant, knowing the realistic exposure — including interest that keeps accruing and the costs you might owe if you lose — helps you decide whether to settle or fight.

An Estimate Is a Starting Point, Not Legal Advice

These calculators are designed to inform your decision, not replace a paralegal or lawyer’s judgment. They can’t weigh the strength of your evidence, a limitation-period argument specific to your facts, or the tactics that win a settlement conference. Use the numbers to plan and to ask sharper questions. When you’re ready to file, defend, or collect, our licensed paralegals and lawyers can review your matter — often starting with a free consultation.