Can First-Time Buyers Use Bonus or Commission for Mortgage Affordability?

If you earn bonus or commission income, you may be wondering whether lenders will count it towards your mortgage. Many first-time buyers rely on variable earnings to boost affordability, but each lender has its own rules on how much it will accept.

The encouraging news is that first-time buyers bonus commission mortgage affordability options are widely available — as long as the income is consistent, well-documented and realistic for the future.

This guide explains how lenders assess variable income, what counts, and how to strengthen your borrowing potential.

Let’s walk through it clearly.

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Why Bonus and Commission Matter for First-Time Buyers

Rising living costs and property prices mean many first-time buyers depend on more than just basic salary. Bonus, commission and overtime can significantly increase borrowing power — especially for:

• sales roles
• hospitality or service jobs
• retail positions
• performance-based industries
• senior leadership roles with annual bonuses
• roles with seasonal or predictable peaks

The key is showing the lender that the income is reliable enough to be factored into affordability.

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What Lenders Classify as “Variable Income”

Variable income includes:

• annual bonuses
• quarterly performance bonuses
• monthly commission
• sales-based commission
• overtime (regular or guaranteed)
• tips or service payments
• productivity incentives

Each type is assessed differently depending on how predictable it is.

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How Much Bonus or Commission Lenders Will Use

Most lenders will not take 100% of variable income unless it’s guaranteed. Instead, they typically use:

50–65% of commission

This is common for sales workers whose pay varies month to month.

50–100% of regular overtime

Regular, evidenced overtime may be counted in full.

50–75% of annual bonuses

Averaged over several years if available.

100% of guaranteed or contractual bonus

If written into your contract, lenders may treat it as basic salary.

Different lenders have different rules, so choosing the right one is crucial.

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How Lenders Verify Bonus and Commission

Underwriters will check:

• the pattern of income over 3, 6 or 12 months
• payslips showing variable earnings
• employer references
• contract wording
• P60 or year-end summaries
• bank statements confirming the payments

Consistency is a major factor — even small month-to-month variation can be acceptable if the overall pattern is stable.

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Do You Need a Minimum Track Record?

Yes — lenders almost always look for history.

Typical requirements:

• 3 months of consistent commission payments
• 6 months for some lenders
• 12 months+ for higher or irregular bonus patterns
• Annual bonuses usually need at least one complete year

If you’ve only just started receiving commission, some lenders may exclude it until a longer track record is shown.

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How Lenders Calculate Affordability Using Variable Income

Affordability checks look at:

• average earnings over time
• stability of the bonus or commission
• how reasonable future payments are
• whether figures fluctuate significantly
• your tax bracket and net income
• existing financial commitments
• your spending patterns on bank statements

Underwriters prioritise sustainability — they want to ensure the income is realistic going forward.

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What If Your Bonus or Commission Is Irregular?

You can still get a mortgage, but:

• lenders may average your income over 3–12 months
• they may use a reduced percentage of the variable portion
• you may be capped by a lower affordability figure
• some lenders may require more documentation

Irregular income works best when combined with stable basic salary.

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High-Street vs Specialist Lender Options

High-street lenders

Typically prefer:

• stable monthly commission
• clear patterns in payslips
• predictable bonus payments
• longer track records

They tend to use strict percentages of variable income.

Specialist lenders

Often more flexible with:

• new bonus schemes
• recently increased commission
• variable or seasonal income
• fluctuating payslip patterns

Specialists rely on manual underwriting, meaning they look closely at your whole financial story.

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How Bank Statements Influence Your Outcome

Even strong commission income can be weakened by poor bank statement conduct.

Underwriters check for:

• responsible spending
• no unarranged overdrafts
• no returned payments
• stable month-to-month patterns
• ability to manage bills consistently

We cover this further in our guide on what lenders look for on bank statements.

Bank statements provide lenders with reassurance that variable income is being managed sensibly.

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How Bonus Income Helps Increase Your Maximum Borrowing

Bonus and commission can significantly increase your borrowing if:

• the income is regular
• it has a long track record
• your employment is stable
• spending is consistent
• affordability margins are healthy

With the right lender match, mixed income can unlock competitive borrowing potential.

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Can Bonus Income Be Used Toward Your Deposit?

Yes — as long as:

• the bonus has already been received
• it is visible on your bank statements
• the source is clear and legitimate

Future or forecasted bonuses cannot count toward a deposit unless paid.

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How to Strengthen Your Application as a Variable Income First-Time Buyer

Keep payslip records organised

Lenders may request up to 12 months of evidence.

Maintain clean bank statements

Stability matters more when income varies.

Avoid large new commitments

New loans or credit reduce affordability.

Keep employment stable before applying

A recent job change may trigger extra checks.

Work with an adviser

This ensures your income profile is matched to the right lender first time.

Let’s explore your best options together if you’re unsure where you stand.

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Final Thoughts

Using bonus or commission income is often a powerful way for first-time buyers to boost their borrowing potential. As long as the income is stable, evidenced and realistic, lenders can take a surprisingly flexible approach.

With the right preparation and lender choice, first-time buyers using bonus or commission for mortgage affordability can access competitive deals and secure the home they’re aiming for.

At Mortgage Bridge, we help you present your income clearly and confidently — and support you through every step of the process.