You googled "spousal support calculator Ontario" and found a handful of options. Maybe you've already tried one or two. You got a number — or more accurately, a confusing range — and now you're sitting here wondering what to do with it.
Here's what the calculator didn't tell you: the number is only half the problem. The other half is understanding what that range actually means for your situation, what factors push you toward the high end versus the low end, and what moves you can make right now that affect the outcome. Most calculators skip all of that.
This is a straight comparison of the main options: MySupportCalculator, Divorcepath, and OntarioSpousalSupport.com — what each one actually does, what it costs, and which one to use depending on where you are in the process.
Quick Verdict
Side-by-Side Comparison
| Feature | MySupportCalculator | Divorcepath | ONTARIOSPOUSALSUPPORT |
|---|---|---|---|
| Spousal support calculator | ✓ Free | ✓ Free (some results blurred) | ✓ Free |
| Child support calculator | ✓ Free | ✓ Free (some results blurred) | ✓ Free |
| Self-employment income | Paid only | Paid only ($19+) | ✓ Free |
| Corporation / dividend income | Paid only | Paid only ($19+) | ✓ Free |
| Before-tax business profits | ✗ | ✗ | ✓ Free |
| Investment income | Paid only | Paid only ($19+) | ✓ Free |
| Special expenses (children) | Paid only | Paid only ($19+) | ✓ Free |
| Net Family Property / asset division | ✗ | ✗ | ✓ Free |
| Explains what the range means | ✗ | ✗ | ✓ Free |
| Strategic timing advice | ✗ | ✗ | ✓ Free |
| Gotcha warnings (Rule of 65, etc.) | ✗ | ✗ | ✓ Free |
| Ontario-specific | ✗ Canada-wide | ✓ | ✓ Free |
| Free unlimited use | Limited Free | Limited Free | ✓ Free |
| Price | Free / Paid | Free / $19 / $39 (30 days) | ✓ Free |
MySupportCalculator: The Lawyer-Grade Math, None of the Context
What It Is
MySupportCalculator is the public-facing version of DivorceMate — the same software Ontario family lawyers use to calculate support. That's a real credential. When a lawyer runs your numbers in their office, there's a decent chance this is the engine they're using. The public gets a simplified version of it.
What the Free Version Does
The free calculator at mysupportcalculator.ca handles the basics: employment income in, SSAG range out. It covers child support and spousal support separately. For a lot of people going through a straightforward divorce — both parties have T4 employment income, no major complications — this is enough to get your bearings.
What the free version doesn't handle: investment income, rental income, self-employment income, private corporation income, or children's special expenses. You hit a wall fast if your situation is anything beyond simple.
What the Paid Version Adds
The paid upgrade adds other income types and children's special expenses. If you're self-employed or have mixed income sources, the paid version gets you closer to what a court would actually calculate. MySupportCalculator doesn't publish pricing prominently — check their site for current rates.
The Real Limitation
The number it gives you is the SSAG range. Courts follow the SSAG in most cases, but they still have discretion on where within the range support lands — and they weigh things the calculator doesn't know about. Career sacrifice for the family. Health issues. Geographic constraints. A spouse who has the ability to work but isn't.
The calculator spits out "$1,200–$2,100/month." It doesn't tell you why the range is $900 wide, what moves you toward the top or bottom, or what factors in your specific situation a judge would consider. You're left to figure that out on your own.
Divorcepath: More Features, More Friction
What It Is
Divorcepath positions itself as the all-in-one Canadian family law platform — child support, spousal support, property division, court forms. It's built for the Canadian market across all provinces and territories, and it's used by family lawyers who want a cloud-based tool with clean PDF output.
The Free Version Problem
Here's where Divorcepath frustrates people. The free version lets you fill out a full intake form — income, children, marriage dates, the whole thing. You put in 10–15 minutes of work. Then the results come back blurred, with a prompt to pay.
That's not a free calculator. That's a trial with a paywall at the end. It might be a reasonable business model, but if you're someone who just got served papers and is trying to understand their situation at 11pm, getting your results hidden after investing that time is a rough experience.
The Paid Plans
Divorcepath offers two plans, both on 30-day access:
- $19 — Child Support Calculator: Calculate child and spousal support, special expenses, all income types, tax credits and benefits, PDF reports.
- $39 — Child & Spousal Support Calculator: Same features as the $19 plan (check their pricing page for the current distinction between tiers).
If you need a PDF report for mediation, a negotiation with your ex's lawyer, or your own records — the $19 plan delivers real value. The PDF output is formatted and professional. For a one-time calculation you need to put in front of someone, it's a reasonable spend.
OntarioSpousalSupport.com: The Calculator + What It Actually Means
The Gap the Others Don't Fill
Getting the SSAG range is the easy part. The hard part is understanding what to do with it.
Why is the range so wide? What factors push you to the top or bottom? What is the Rule of 65 and does it apply to you? What happens if your ex has income they're not disclosing? What if you're self-employed and the court decides to impute income to you? What strategic moves could you make before filing that actually change the numbers?
None of the other tools touch any of that. MySupportCalculator and Divorcepath are calculators. Full stop. They're built to produce the SSAG output. What happens after you get that number — how to interpret it, how to prepare for what's coming, what traps to avoid — that's on you.
OntarioSpousalSupport.com is built around the reality that most people going through divorce aren't missing the math. They're missing the context.
What You Get
Free SSAG calculator — with complex income handled. The calculator supports the full picture of income that courts actually look at: employment income, self-employment income, investment income, and income from a private corporation including dividends. That last one matters more than people realize.
Here's the thing about business owners going through divorce: courts don't just look at what you reported to the CRA as personal income. They look at the before-tax profits of the business, retained earnings, dividends paid — the full economic picture of what the corporation earns. MySupportCalculator's free version doesn't handle this at all. Divorcepath locks it behind the paid tier. OntarioSpousalSupport.com handles it free, because this is exactly the scenario where getting the number wrong has real consequences.
Net Family Property / asset division calculator. This is where OntarioSpousalSupport.com goes somewhere the other tools don't go at all. The asset division calculator estimates how Net Family Property gets divided — the matrimonial home, pensions, RRSPs, TFSAs, business interests, debts. MySupportCalculator doesn't have this. Divorcepath doesn't have this. If you're trying to understand the full financial picture of your separation — not just monthly support payments but who gets what — this is the tool that covers both sides of the equation.
Plain-language explanation of the range. Why is it $800–$1,600? What actually determines where within that range the courts land? The "why" behind the number — explained like a friend who's been through it, not like a legal textbook.
The gotchas, named and explained. The Rule of 65. Imputed income traps. Private corporation income gotchas. What happens if your ex is hiding money in a company. What "self-employment income" actually means to a court. These are the things that blindside people in Ontario divorces — and they're explained before they blindside you.
Strategic timing advice. Before you file. Before your ex files. There are moves that actually matter: financial documentation, income timing, pension considerations, retirement timing. These aren't legal advice — they're the kind of things a knowledgeable friend would tell you over coffee that your $300/hour lawyer often skips because you're paying by the minute.
Ontario-specific, full stop. Not a Canada-wide tool with Ontario tacked on. Every example, every scenario, every gotcha is Ontario law, Ontario courts, Ontario outcomes.
Free. No Paywall. No Blurred Results.
The calculator at OntarioSpousalSupport.com is free. You don't get your results blurred after filling out your information. You don't hit a wall and get asked for a credit card. The SSAG range is visible, and the context around it is right there.
The Other Free Options Worth Knowing
Two other free tools in the Ontario market that do the basic calculation:
Crossroads Law (crossroadslaw.ca) — Free child support and spousal support calculator from a Canadian family law firm. Clean and straightforward, though the goal is ultimately to get you to contact their lawyers. Works fine for a quick estimate.
Calgary Family Law / Fraese Avmont (calgaryfamilylaw.ca) — Another free spousal support calculator from a law firm. Despite the Calgary name, the SSAG applies across Canada, so it produces valid numbers for Ontario. Again, a lead-gen tool with a functional calculator attached.
Both are fine for a quick sanity check. Neither handles complex income, neither has an asset division calculator, and neither provides Ontario-specific context or gotcha warnings.
Which Calculator Should You Use?
If you just need a quick number to start understanding your situation:
MySupportCalculator's free version. It's fast, uses legitimate DivorceMate software, and handles basic employment income scenarios.
If you need something you can show someone — a mediator, a negotiator, your own lawyer:
Divorcepath's $19 plan. The PDF output is clean and professional, and 30 days gives you time to run the scenarios you need.
If you're self-employed, own a corporation, receive dividends, or have investment income:
OntarioSpousalSupport.com — and honestly, don't bother with the others for this. The free calculators will give you a number based on employment income that has no relationship to what a court would actually calculate for your situation. The paid version of Divorcepath handles it, but you'll pay $19–$39 for a 30-day window. OntarioSpousalSupport.com handles all of it free.
If you want to understand asset division alongside support:
OntarioSpousalSupport.com's Net Family Property calculator is the only tool in this comparison that estimates how assets get divided. If you're trying to understand the full financial picture — monthly support AND the property settlement — that's where to start.
If you want to actually understand what you're dealing with:
OntarioSpousalSupport.com. Start with the calculator, read the gotchas that apply to your situation, and go in knowing the full picture — not just a number that raises more questions than it answers.
Frequently Asked Questions
What is the most accurate spousal support calculator in Ontario?
MySupportCalculator uses the DivorceMate Tools One engine — the same software Ontario family lawyers use — so mathematically it's as accurate as it gets for basic employment income scenarios. But "accurate" only covers the math. It doesn't tell you what the number means, how to prepare, or what factors affect where you land within the range. For accuracy plus context, OntarioSpousalSupport.com covers both — and handles complex income types that MySupportCalculator locks behind a paywall.
Is MySupportCalculator accurate?
Yes, for straightforward employment income scenarios. It uses DivorceMate, which is the professional standard. The limitation: the free version only handles employment income. If you or your ex has self-employment income, investment income, dividends, or a private corporation, you'll get an incomplete — and potentially misleading — number.
Is Divorcepath worth paying for?
The $19 plan has real value if you need a clean PDF report for mediation or negotiation. The frustrating part is how the free version works — you fill out a full intake form and then your results are blurred. If you just need a spousal support number and don't need PDF output, the free calculator at OntarioSpousalSupport.com covers the same ground without the friction.
How is spousal support calculated in Ontario?
Ontario uses the Spousal Support Advisory Guidelines (SSAG), which produce a range for both the amount and duration of support. Without children: 1.5% to 2% of the gross income difference per year of marriage, capped at 37.5–50% after 25 years. With children: targets 40–46% of combined net disposable income for the recipient. These are ranges — courts have discretion on where the final number lands, based on factors like the roles each spouse played, health, employment prospects, and the length of financial interdependence.
Are free online spousal support calculators accurate?
For basic employment income, yes — the math is the math. Where most free calculators break down: self-employment, private corporations, dividends, investment income, and cases with children (significantly more complex INDI calculation). OntarioSpousalSupport.com handles all of those income types free — the only free tool in this comparison that does. Consult a lawyer before making major decisions either way.
Do I need a lawyer if I've used a spousal support calculator?
The calculator tells you the SSAG range. A lawyer tells you where you'll realistically land within that range — and why. For simple situations (salaried income on both sides, no children, shorter marriage), a calculator gets you most of the way there. If there's a private corporation, self-employment income, a spouse who could work but isn't, or you're near the Rule of 65 threshold — a lawyer consultation is money well spent.
What is the Rule of 65 in Ontario spousal support?
The Rule of 65 is one of the most important — and most misunderstood — aspects of Ontario spousal support. If the recipient's age plus the years of marriage adds up to 65 or more, the SSAG supports indefinite (not time-limited) spousal support. A 45-year-old who was married 20 years hits the threshold exactly. This can mean support for life, not just a few years. Read the full Rule of 65 guide →
This article is for informational purposes only and does not constitute legal advice. Spousal support calculations depend on individual circumstances. Consult an Ontario family lawyer before making decisions based on calculator results.