EducationBuying a Home Together
GuideStep 6 of 7IntermediateFor: Co-buyers deciding whether (and how) to record unequal shares.

How ownership percentages actually work

Dec 15, 2025
7 min read
Title, contributions, and agreements don’t always match — here’s what that means in real life.
Education only

This guide is educational and not legal advice. If you need advice specific to your situation (especially for title, agreements, taxes, or separation), talk to a qualified professional in your province.

Who this is for

Co-buyers deciding whether (and how) to record unequal shares.

Difficulty

Intermediate co-ownership concept

What you'll learn

  • Understand what’s on title versus what’s tracked separately.
  • Know the practical implications of 50/50 title with unequal inputs.
  • See how people document equity splits.
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Scenario: Your title says 50/50, but you paid more. Is that a problem? It depends on what you agreed — and what you documented.

Title vs contributions: the difference

When you buy a home together, there are two different concepts that don't always match:

  • Legal title: What's recorded on the property deed. This is what the law sees, and it determines who owns what percentage of the home legally.
  • Contributions: What each person actually paid (down payment, mortgage principal, renovations, etc.). This is the financial reality, but it's not automatically reflected in title.

These can be different, and that's okay — as long as you're both clear about what you agreed to.

Simple example

Alex and Sam buy a $600,000 home together. Alex puts down $120,000, Sam puts down $30,000. They go on title as joint tenants (50/50), which means legally they each own 50%.

But financially, Alex contributed $90,000 more to the down payment. If they sell and split 50/50 based on title, Alex might feel like they're not getting credit for that extra contribution.

This isn't necessarily a problem — but it needs to be addressed explicitly, not assumed.

When title and contributions don't match

It's common for title to say 50/50 even when contributions are unequal. This happens because:

  • Joint tenancy is simpler: Many couples choose joint tenancy (which requires equal shares) for simplicity, even if down payments were different.
  • You plan to balance it later: You might agree that unequal down payments will be balanced by how you split costs going forward, or handled at sale.
  • You have a separate agreement: You might have a written agreement that says "title is 50/50, but we'll handle the down payment difference separately."

The key is: if title and contributions don't match, you need to be explicit about how you'll handle it. Otherwise, assumptions can differ, and that creates problems later.

How people align title and contributions

There are three main ways people handle the difference between title and contributions:

1. Title percentages match contributions

You structure title to reflect your contributions. If one person put down 80% of the down payment, you might go on title as tenants in common with 80/20 ownership.

Pros: Title matches reality, clear who owns what percentage.

Cons: Requires tenants in common (not joint tenancy), and if you want to change it later, you need to update title (which costs money).

When it works: If contributions are significantly different and you want that reflected legally, this is the cleanest approach.

2. Written agreement separate from title

You keep title at 50/50 (or whatever is simplest), but you have a written agreement that says how contributions will be handled differently. For example: "Title is 50/50, but at sale, we'll return down payments first, then split remaining equity 50/50."

Pros: Keeps title simple, but documents your actual agreement. Can be more flexible than changing title.

Cons: Requires both people to honor the agreement. If one person doesn't, you might need to go to court to enforce it.

When it works: If you want to keep title simple but handle contributions differently, this is a good middle ground.

3. Contribution tracking (informal or formal)

You track what each person has contributed over time (down payment, mortgage principal, renovations, etc.), and use that record to inform equity splits or buyouts, even if title says 50/50.

Pros: Flexible, can account for contributions over time, not just initial down payment.

Cons: Requires keeping good records. If you don't have records, it's hard to reconstruct later.

When it works: If contributions are changing over time (one person pays more for renovations, etc.), tracking helps you see the full picture.

Practical implications of 50/50 title with unequal inputs

If you're on title 50/50 but contributions are unequal, here's what you need to know:

Legal default

Legally, if title says 50/50, you each own 50% of the home. If you sell and split based on title, you each get 50% of the net proceeds, regardless of who paid what.

This means: if you want contributions to matter, you need to handle it separately (written agreement, contribution tracking, etc.). Title alone won't protect unequal contributions.

At sale

If you sell and split 50/50 based on title, the person who contributed more might feel like they're not getting credit for their extra contribution. This is why it's important to agree upfront on how you'll handle it.

At buyout

If one person wants to buy out the other, and title says 50/50, the buyout is typically 50% of the home's value (minus mortgage). If contributions were unequal, you might want to adjust this based on your agreement.

How to document equity splits

If title and contributions don't match, document your agreement. Here are common approaches:

Simple one-page summary

Write down: "Title is 50/50, but we agree that at sale, we'll [handle it this way]." This isn't a legal document, but it creates a record of your agreement.

Co-ownership agreement

A formal agreement (drafted by a lawyer) that documents how contributions will be handled, how equity will be split, and what happens in various scenarios. This is more formal but provides more protection.

Contribution tracking

Keep a record of what each person has contributed (down payment, mortgage principal, renovations, etc.). This record can inform equity splits or buyouts, even if title says 50/50.

Practical takeaways

  • Understand the difference: Title is what's legal. Contributions are what you actually paid. They don't have to match, but you need to be clear about how you'll handle the difference.
  • Know the implications: If title says 50/50, that's what matters legally. If you want contributions to matter, you need to handle it separately.
  • Document your agreement: Whether it's a one-page summary or a formal agreement, write down how you'll handle unequal contributions.
  • Track contributions: Keep a record of what each person has paid. This record is useful for equity splits, buyouts, or other financial decisions.
  • Revisit when things change: If contributions change over time (one person pays for major renovations, etc.), revisit your agreement.

How Partnered helps (lightly)

Partnered helps you track contributions over time, creating a clear record of what each person has paid (down payment, mortgage principal, renovations, etc.). This record is useful when you need to discuss equity splits or buyouts, because you have factual data instead of "I think I paid more" conversations. It's not a legal document, but it provides the data that can inform those discussions.

If you want to go deeper, read How to split a down payment fairly or Legal title vs beneficial ownership.

Education only — not legal advice. Rules vary by province and by your specific situation. If you need advice tailored to you, talk to a qualified lawyer in your province.

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FAQ

Does the deed always reflect actual ownership?

Not always. The deed shows legal title, but beneficial ownership can differ. If one person contributed more, they may have a larger equitable claim even if the deed says 50/50.

Can ownership percentages change over time?

Yes, if the co-owners agree. Lump-sum payments, renovations, or disproportionate mortgage contributions can shift the equity story. What matters is tracking and agreeing to changes in writing.

What is the difference between legal and beneficial ownership?

Legal ownership is what the public record shows. Beneficial ownership reflects who actually contributed and who stands to gain. In disputes, courts can look beyond the title to determine beneficial interests.

Next steps

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