--- title: "TP-1015.3-V Quebec 2026: Claiming Spousal Support Deduction at Source ✦ Goldwater Droit" meta: "og:description": "The TP-1015.3-V lets you deduct court-ordered spousal support from your paycheque immediately — not just at tax time. Here's how it works and what to watch for." "og:title": "Paying Spousal Support in Quebec? Here's How to Claim It at Source" description: "How to use Quebec's Source Deductions Return to claim your spousal support deduction from payroll — Line 15, eligibility rules, and common mistakes. Updated 2026." --- # Source Deductions Return 2026 ## Overview For anyone in Quebec paying court-ordered or agreement-based spousal support, the **Source Deductions Return** is the mechanism for converting that deductible expense into immediate payroll relief. Filed with your employer — not with **Revenu Québec** — it adjusts the Quebec income tax withheld from each paycheque to reflect your actual credit entitlements and authorized deductions. Without an updated form on file, your employer applies only the basic personal amount when calculating withholding, and any deductions you are entitled to claim must wait until your annual return. Separation also changes the credits you are entitled to claim in ways that affect withholding immediately. A spousal credit transfer that appeared on your previous return must be removed once you are living apart from your spouse, and failing to update your form within the required timeframe carries real consequences. Revenu Québec issues a revised version annually. This page covers the 2026 edition. Federal income tax withholding is governed by a separate Canada Revenue Agency process and is not addressed here. ## What Does the Source Deductions Return Do? The TP-1015.3-V instructs your employer on how much Quebec income tax to withhold from your salary, pension income, parental insurance benefits, or other remuneration. Without a completed form, your employer applies only the basic personal amount — $18,952 for 2026 — when calculating withholding. The form allows you to claim additional personal tax credits, declare authorized deductions, or request extra withholding to prevent a balance owing at year-end. From a family law perspective, the most consequential function of the return is Line 15: deductible support payments. Under the _Taxation Act_ and as set out in Revenu Québec's publication _The Tax Effects of Separation and Divorce_, qualifying **spousal support** — or _pension alimentaire_ in French — is deductible for the payor and taxable for the recipient. Declaring the expected annual support amount on Line 15 directs your employer to reduce monthly withholding accordingly — distributing the tax benefit across the remaining pay periods of the year rather than as a refund the following April. ## When Do You Need the Source Deductions Return? File or update the TP-1015.3-V any time a life event changes your credit entitlements or deductible amounts. For family law clients, the most common triggers are: - A court order or written agreement requires you to pay spousal support and you want those payments reflected in your Quebec source deductions immediately - You separate from a spouse and must remove the spousal credit transfer from Line 2 - You start a new job and need to establish correct withholding from the outset - A court varies your support order, changing the amount previously declared on Line 15 The form must be delivered to your employer within 15 days of any event that reduces the credits or deductions you previously declared. This is a mandatory reporting obligation under the form's filing rules, not a discretionary one. ## Who Must File the Source Deductions Return? The employee or beneficiary receiving remuneration completes, signs, and delivers the TP-1015.3-V directly to their employer or payer. Revenu Québec is not a recipient of the form. The employer then applies the form's instructions when calculating withholding without prior verification of the amounts declared. In a support context, the payor alone files this form to claim the Line 15 deduction. The recipient handles support income through their annual income tax return. If you hold two jobs simultaneously in 2026, enter 0 on Line 10 with the second employer — the basic personal amount of $18,952 may be claimed only once. ## How Do You File the Source Deductions Return? Download the 2026 source deductions return from the Revenu Québec website, complete it, and deliver it to your employer. Do not send it to Revenu Québec. For the support deduction, enter your expected annual deductible support payments on Line 15. Your employer distributes the deduction evenly across the remaining pay periods — submitting the form early in the year maximizes the benefit. You must give your employer a completed form on the day you start employment, before a non-employer payer makes their first payment to you, or within 15 days of any event reducing your previously declared credits or deductions. To voluntarily increase the amount withheld from each paycheque, use Line 11. ## What Documents Do You Need to Complete the Source Deductions Return? Before completing the form, gather the following: - Your social insurance number and date of birth - A copy of the court order or written support agreement, confirming the amount and that payments are periodic rather than lump sum - Your estimated net income for 2026, and your spouse's estimated taxable income if claiming the spousal transfer on Line 2 - Documentation of any dependant's post-secondary enrollment if claiming Line 3 Only spousal support qualifies for Line 15. Child support paid under orders or agreements entered into after April 30, 1997 is not deductible and must not be entered on the form. The May 1, 1997 cutoff applies for Quebec provincial purposes under section 1015 of the _Taxation Act_. ## How Does the Source Deductions Return Affect Family Law Matters? The boundary between deductible spousal support and non-deductible child support is the most consequential distinction on this form for separated parents in Montreal and across Quebec. Spousal support — periodic payments made to a former spouse for their maintenance under a court order or written agreement — is deductible for the payor and taxable for the recipient. Child support payments under post-April 1997 arrangements are neither deductible nor taxable. Entering child support on Line 15 is an error Revenu Québec will identify on reassessment. To qualify, support payments must be periodic rather than lump sum, made under an order or written agreement, for the maintenance of the recipient or a child, and paid while the parties are living apart. An arrangement that does not satisfy all four conditions will not survive review. ## A Real-World Example > 📌 **Parent A** lives in LaSalle and earns employment income from a single Montreal employer. Following a separation, a Quebec court orders **Parent A** to pay $1,400 per month in spousal support to **Parent B**. **Parent A** has been paying from net income for several months, and the employer is still applying the pre-separation form, which claimed the spousal credit transfer on Line 2.**Parent A** needs to file an updated source deductions return removing the Line 2 spousal transfer and entering $16,800 in annual deductible support on Line 15. The updated form is already overdue — it was required within 15 days of the separation event. Once the corrected TP-1015.3-V is delivered to the employer, withholding adjusts for the remaining pay periods. **Parent A**'s monthly take-home increases to partially offset the support obligation. Support paid before the updated form was submitted remains deductible on **Parent A**'s annual income tax return, but the payroll benefit applies only from the date the corrected form is received. ## Frequently Asked Questions ### Can I deduct child support payments on Line 15? No. Child support paid under agreements or orders entered into after April 30, 1997 is not deductible and does not belong on Line 15. Only spousal support qualifies — payments must be periodic, made under a court order or written agreement, and paid while you and the recipient are living apart. Entering child support on this line is an error Revenu Québec will reassess. ### Do I need to file a new TP-1015.3-V every year? No — the form remains in effect until you submit a replacement. Credit amounts are indexed annually, and any change in circumstances — a new or varied support order, changed income, or the end of a support obligation — requires a new filing. You are also obligated to file within 15 days of any event reducing your previously declared credits or deductions. ### Does submitting this form mean Revenu Québec has approved my support deduction? No. The TP-1015.3-V is submitted to your employer without prior Revenu Québec authorization, and your employer applies it as submitted. The deduction is reviewed when you file your annual income tax return. If the payments do not meet all qualifying conditions, Revenu Québec may disallow the deduction on reassessment, and the resulting tax plus interest becomes payable. ## Common Mistakes to Avoid Failing to file an updated return within 15 days of a separation is the most common error seen in Montreal family law matters involving source deductions. Months of incorrect withholding accumulate and often produce an unexpected balance owing the following April. Entering child support on Line 15 is a recurring and consequential mistake. Post-April 1997 child support does not qualify, and Revenu Québec will reassess the return when it identifies the error. Confirm which payments qualify before completing the line. Claiming the basic personal amount with two employers simultaneously doubles a credit you may claim only once. If you hold two jobs in 2026, enter 0 on Line 10 with your second employer. And always download the current year's version of the form — the TP-1015.3-V is revised annually, and an outdated version will contain incorrect credit figures. ## When to Get Legal Help Support arrangements that deviate from standard periodic payment structures — lump-sum settlements, payments directed to third parties, or orders combining child and spousal support — require analysis before any amount is entered on Line 15. Filing incorrectly has tax consequences that compound over time, and correcting an error after Revenu Québec issues a reassessment is far more difficult than getting it right at the outset. If your agreement was drafted without legal counsel, or if a court has since varied its terms, a family law lawyer can confirm whether your payments qualify for the deduction and help coordinate both the Quebec and federal source deduction filings correctly. ## Speak with a Family Lawyer When spousal support intersects with tax planning, the stakes of accurate source deduction filing are high. Errors compound, and correcting them after Revenu Québec issues a reassessment costs far more in time and risk than addressing them upfront. If you are paying spousal support in Quebec and want to ensure your source deductions are set up correctly, or if you need guidance on complex support arrangements, [contact Goldwater Droit](https://goldwaterdroit.com/en/contact) to speak with a family lawyer who can walk through your situation and confirm your filing approach. Written and reviewed by [**Émylia Morin**](https://goldwaterdroit.com/en/our-team/emylia-morin) Published on **April 1, 2026** Last reviewed **April 1, 2026** #### *Are you paying spousal support in Quebec and unsure whether your source deductions are set up correctly?* ### Goldwater Droit can help. [**Contact**](https://goldwaterdroit.com/en/contact)