Ontario Legal
Calculators & Tools— Toronto Lawyer
Free Ontario tools for business owners and litigants — track personal guarantee exposure, discuss shareholders’ agreement terms, build a demand letter, estimate court costs and interest, check deadlines, and find your courthouse. No sign-up. Your answers stay in your browser until you choose to share them.
· Reviewed by Jonathan Kleiman, J.D.
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18 free tools for Ontario businesses and disputes
Plan the decisions behind a shareholders’ agreement, or work through the arithmetic and deadlines of a dispute — from what a claim is really worth towhether you still have time to file. Each one is free, runs in your browser, and is dated and reviewed. They are a starting point, not legal advice — and when you want a lawyer in your corner, the free consultation is one click away. If you run a website of your own, most of these calculators can be embedded on your site for free.
Not sure where to start? Get your action plan.
Answer a few quick questions — owed money, been served, or collecting a judgment — and get a step-by-step plan that points you to the right tool for each move. No score, no sign-up, about a minute.
Offer-to-Lease Negotiation Brief
Get the rent, guarantees, renewal and exit questions in order before signing an Ontario commercial offer to lease. Tenant and landlord paths, a live non-binding brief, and free PDF or text downloads. No account.
Open the tool →Business PlanningPersonal Guarantee Exposure Tracker
See personal guarantees across leases, loans and other business commitments in one inventory. Separate signed and proposed exposure, track renewal dates, and download a PDF or text copy for discussion. Your entries stay on your device.
Open the tool →Business PlanningShareholders’ Agreement Term Sheet Builder
Work through ownership, vesting, major decisions, transfers, and exits. Build a non-binding discussion term sheet with a live preview and free PDF or text downloads. Flat fee quoted before work if you want a formal agreement.
Open the tool →Start HereSmall Claims Action Plan
Not sure what to do next? Answer a few quick questions — suing, being sued, or collecting a judgment — and get a step-by-step plan with the right form, deadline check, and free tool for each move. No score, just the procedure.
Open the tool →CalculatorSmall Claims Court Calculator
Estimate the full value of your claim — principal, prejudgment interest, and recoverable court costs — for disputes up to $50,000.
Open the tool →CalculatorFiling Fee Calculator
Get the exact court fee for a claim, defence, motion, default judgment, or trial date under O. Reg. 332/16 — before you file.
Open the tool →CalculatorCost Award Calculator
See the most a judge can order the losing side to pay — the 15% representation-fee cap, disbursements, and double costs after an offer to settle.
Open the tool →CalculatorSettle or Go to Court Calculator
Weigh a settlement offer against the risk-weighted value of trial — win/lose odds, interest, cost awards, and collection risk — as a plaintiff or a defendant.
Open the tool →CalculatorSmall Claims vs. Superior Court Calculator
Which court fits your case? Weighs the $50,000 limit, Simplified Procedure, the order you need, and whether it pays to cap your claim to stay in the cheaper forum.
Open the tool →CalculatorPrejudgment Interest Calculator
Compute simple interest under s. 128 of the Courts of Justice Act at the correct quarterly rate for the date your claim was issued.
Open the tool →CalculatorPostjudgment Interest Calculator
Compute the interest accruing on an unpaid judgment under s. 129 of the Courts of Justice Act, from the date of judgment to payment.
Open the tool →CalculatorGarnishment Calculator
How much can a garnishment actually take? 20% of net wages for debts, 50% for support, no cap on bank accounts — see the per-paycheque figure and how long collecting your judgment will take, from either side of the notice.
Open the tool →CalculatorLimitation Period Calculator
Estimate the presumptive deadline to start a claim under the Limitations Act, 2002 — with special deadlines and notice traps flagged.
Open the tool →CalculatorDefence Deadline Calculator
Served with a Plaintiff’s Claim? Count your 20-day deadline to file a Defence, gauge your risk of being noted in default, and see what to file next.
Open the tool →CalculatorCounterclaim Calculator
Been sued but the plaintiff owes you too? See your net position after a Defendant’s Claim (Form 10A) set-off, whether it fits the $50,000 limit, what it costs, and your deadline.
Open the tool →CalculatorContractor Dispute Calculator
Deposit taken, job abandoned, or defective work? Estimate what your contractor owes you the way a court measures it — paid plus quotes to finish and fix, minus the contract price.
Open the tool →GeneratorDemand Letter Generator
Build a complete, properly structured demand for payment in minutes — entirely in your browser, with nothing sent anywhere.
Open the tool →DirectoryOntario Court Locations
Addresses, phone numbers, and filing hours for every Small Claims Court office across Ontario’s judicial regions.
Open the tool →How the pieces fit together
Not sure which tool you need? The Small Claims Action Planasks a few questions and hands you the sequence — the right tool, in the right order, for your situation.
A debt-recovery matter runs in a predictable order, and there is a tool for each step. Start with theLimitation Period Calculator to confirm you are still in time to sue — a missed deadline ends the claim before it begins. Next, put the other side on notice: build a draft with the Demand Letter Generator, since a demand often gets you paid without court (just remember it does not pause the limitation clock). If you have to file, price the case with theSmall Claims Court Calculator, theFiling Fee Calculator, and thePrejudgment Interest Calculator; confirm your courthouse in the court locations directory; and when you win, the Cost Award Calculator andPostjudgment Interest Calculator show what you can recover and what keeps accruing until you are paid — and theGarnishment Calculator shows what a wage or bank garnishment will actually collect, and how fast.
On the other side of the table, if you have been served, start with theDefence Deadline Calculator — it counts your 20 days to respond, flags the risk of being noted in default, and lists exactly what to file.
Rather have a lawyer run the numbers?
Bring your situation to a free 30-minute consultation. Get a flat-fee quote and a real plan to recover what you're owed — before the limitation clock runs out.
These tools are information, not advice. Every figure they produce is an estimate based on what you enter, and limitation and costs law has exceptions a tool can't see. Using them does not create a lawyer–client relationship. If your matter is significant, have a lawyer confirm the numbers and your deadline before you rely on anything here.
About these tools
Are these Ontario legal tools free to use?
Yes. Every calculator and tool here is completely free, with no account or sign-up required. They run in your browser and are built by Toronto lawyer Jonathan Kleiman as a public resource for Ontario litigants and small businesses.
Do these tools give legal advice?
No. They provide general legal information and estimates based on the figures and facts you enter. They are not legal advice, are not tailored to your situation, and using them does not create a lawyer–client relationship with Kleiman Law. For advice on your specific matter, book a free consultation.
Are the calculators current with Ontario law?
Each tool is dated and reviewed. The rules and rates were verified against the official e-Laws consolidations and the Ministry of the Attorney General's published rates as of June 2026, including the $50,000 Small Claims Court limitin force October 1, 2025. Rules and rates change, so each tool carries its own "rules verified" stamp.
Is my information kept private?
Yes. The tools compute everything in your own browser — nothing you enter is transmitted to or stored by Kleiman Law. Your information leaves your device if you choose to email it or submit a consultation request.
Free tools are a start. A lawyer finishes the job.
Book a free 30-minute consultation with Jonathan. Run your situation by a real lawyer, get a flat-fee quote, and leave with a plan to recover what you're owed — judgment, interest, and costs.