14 Costly Things Canadians Forget to Do After Filing Their Taxes

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Tax filing can feel like the finish line, but the weeks after filing often decide whether money is protected, delayed, recovered, or quietly lost. A return may be submitted, yet the Canada Revenue Agency can still adjust amounts, request documents, issue benefit payments, assess instalment obligations, or update contribution room.

These 14 costly post-filing tasks matter because they connect tax season to the rest of the year: refunds, credits, RRSP room, TFSA limits, family benefits, payment deadlines, and records that may be needed long after the return is forgotten. For many Canadians, the expensive mistake is not filing late; it is assuming that filing means everything is settled.

Check the Notice of Assessment Carefully

The Notice of Assessment is more than a confirmation that a tax return was processed. It summarizes income, deductions, credits, refund or balance owing, and any changes the CRA made while assessing the return. A small adjustment can affect a refund, reduce a credit, or change future contribution room. For example, someone expecting a larger refund may discover that the CRA corrected a slip amount or disallowed part of a claim.

Many Canadians glance only at the refund line and miss the rest. That can be costly because the notice may include RRSP deduction limit details, repayment information, or explanations of changes. A person who files early, receives a deposit, and never opens the assessment may not realize that the CRA changed a line item until a later benefit payment is lower than expected.

Pay Any Balance Owing Before Interest Builds

Filing a return does not stop interest from accumulating if a balance remains unpaid. The CRA charges daily compound interest on amounts owing after the payment deadline, which means a modest tax debt can become more irritating over time. A taxpayer who files on time but leaves a $1,200 balance unpaid for months may avoid a late-filing penalty, yet still face interest.

The costly habit is treating the return and the payment as the same task. They are separate. Even when cash is tight, ignoring the balance usually makes the problem worse. The CRA allows payment arrangements in certain cases, including scheduled payments through an online account or by contacting the agency. Acting quickly matters because the longer the balance sits, the less of each future payment goes toward the original tax bill.

Confirm That the CRA Actually Received the Payment

A tax payment made through online banking or another channel can take time to appear in a CRA account. That delay creates confusion, especially when a taxpayer assumes everything is settled after clicking “pay.” If the wrong payment category, social insurance number, or tax year is used, the money may not land where expected. A person may believe a balance is gone while the CRA account still shows tax owing.

Checking the statement of account after filing is a simple but overlooked step. It confirms whether a payment was received, whether a refund was applied to a debt, or whether a balance remains. This is especially useful for self-employed workers, people paying instalments, and anyone who made multiple payments during tax season. A five-minute review can prevent surprise interest, duplicate payments, or unnecessary calls later.

Track the Refund Instead of Assuming It Will Arrive

Refunds are not always instant, even when a return is filed electronically. The CRA provides online refund status tools, but many people forget to check them after filing. A delayed refund may simply be under review, but it can also point to outdated direct deposit information, an amount transferred to another CRA debt, or an issue that needs attention. Waiting silently can make a manageable delay feel like a mystery.

This matters most when refunds are already earmarked for rent, debt, travel, or summer expenses. A household counting on a deposit may not realize that a refund has been held, redirected, or delayed until bills are due. Checking status, reviewing CRA mail, and confirming direct deposit details helps prevent the awkward situation of budgeting around money that has not actually been released.

Update Direct Deposit Before Benefits or Refunds Go Missing

Banking changes can turn tax season into a scavenger hunt. If a refund, GST/HST credit, Canada Child Benefit, or other payment is sent to an old account, the fix may take time. The CRA says direct deposit updates can be made online, and taxpayers should not close an old bank account until the first payment has reached the new one. That warning exists because payment transitions can be messy.

The costly version usually happens after a move, bank switch, separation, or account closure. Someone files a return, expects a refund, and later discovers the payment went to outdated banking information or was issued by cheque. Updating direct deposit after filing is not glamorous, but it protects more than one payment. It can affect tax refunds, credits, benefit deposits, and older payments that may still be waiting.

Update Address, Email, and Marital Status Promptly

The CRA relies on current personal information to send notices and calculate certain benefits. Address changes, email updates, marital status changes, and family changes can all affect what arrives and how much is paid. The CRA specifically warns that some changes can directly affect benefit eligibility, and marital status changes must be reported by the end of the month after the month the status changed.

This is where post-filing forgetfulness becomes expensive. A newly separated parent, newly married couple, or household that moved provinces may file correctly but leave account details outdated afterward. Benefit payments can be recalculated, delayed, stopped, or clawed back if information is wrong. A tax return captures a point in time; life changes after filing still need to be reported before the CRA’s records drift away from reality.

Watch for CRA Review Letters and Document Requests

A filed return can still be reviewed. CRA review programs may ask for receipts, statements, or proof related to specific claims. This does not always mean a full audit, but ignoring the request can lead to denied deductions or credits. A common example is a taxpayer who claims medical expenses, moving expenses, childcare, tuition, or employment expenses, then misses the CRA letter asking for documentation.

The expensive mistake is assuming “filed” means “finished.” CRA mail may arrive electronically, by paper, or through account notifications, and a missed message can turn a legitimate claim into a reassessment. Keeping organized records helps, but responding on time matters just as much. A shoebox of receipts does little good if the request sits unopened until the deadline passes.

Keep Tax Records for Six Years

Tax receipts often get discarded too quickly after a refund arrives. The CRA generally requires individuals to keep tax documents and supporting records for at least six years, even when the return was filed online or the software said documents did not need to be attached. That includes receipts, bank statements, cancelled cheques, and other proof for deductions or credits claimed.

This rule catches people because modern filing feels paperless. A taxpayer may upload nothing, receive a refund, and assume digital records are unnecessary. Then a review letter arrives two years later asking for proof of a medical, donation, moving, or childcare claim. Reconstructing old receipts can be frustrating or impossible. A simple folder by tax year can protect hundreds or thousands of dollars in previously claimed amounts.

Fix Missed Slips or Deductions With an Adjustment

A missing T-slip, forgotten medical receipt, late charitable receipt, or overlooked tuition slip does not always mean the taxpayer is stuck. Once a return has been assessed, Canadians can request changes through CRA processes such as Change my return, ReFILE where available, or a T1 adjustment request. This can recover missed credits or correct income before a bigger problem develops.

The costly part is doing nothing. A person who later finds a T4A, investment slip, or RRSP receipt may worry that changing the return will be too complicated and leave it alone. If the slip increases income, ignoring it can lead to reassessment and interest. If it supports a credit or deduction, ignoring it leaves money behind. Post-filing review is the moment to compare slips, receipts, and the assessed return line by line.

Recheck RRSP Deduction Room Before Contributing Again

RRSP room changes after the CRA assesses the return. The latest Notice of Assessment or CRA account details can show the deduction limit and unused contributions. This matters because Canadians often restart automatic RRSP contributions after filing without checking whether their room changed because of pension adjustments, previous unused contributions, or reassessments.

The penalty risk is real when contributions drift above the allowable amount. A person with workplace pension adjustments and regular RRSP deposits may assume old contribution room is still available, only to discover the new limit is lower than expected. The practical habit is to pause, read the latest RRSP section, and update monthly contributions before the next cycle of deposits begins. A return may be filed in spring, but the RRSP mistake can build all year.

Verify TFSA Contribution Room Before Adding Refund Money

Tax refunds often become TFSA contributions, especially when Canadians want to put found money to work quickly. The problem is that TFSA room can be misunderstood. Withdrawals, prior contributions, multiple accounts, and timing all matter. The CRA notes that updated TFSA contribution room becomes available in CRA accounts after annual records are processed, and it also advises checking financial institution records.

The costly example is familiar: someone receives a refund, adds it to a TFSA, and later learns that the CRA number was not aligned with recent deposits at another bank or brokerage. Overcontributions can create tax charges. The safer post-filing move is to compare CRA room with personal records before contributing. A refund can still be invested, but it should not be rushed into a registered account on guesswork.

Plan for Instalments If Income Was Less Taxed at Source

A surprising balance owing can be a warning sign for the next year. Canadians may have to pay tax instalments if net tax owing crosses CRA thresholds in the current and a prior year. This often affects self-employed workers, landlords, retirees with taxable investment income, gig workers, and people with side businesses. Instalment dates typically fall throughout the year, not just at tax time.

Forgetting this after filing can make the next return painful. Someone who owed tax this year may keep the same habits, then face another balance plus instalment interest if required payments were missed. The CRA can charge interest and, in some situations, penalties for insufficient instalments. A post-filing review should ask a simple question: was this balance a one-time surprise, or the start of a repeating tax pattern?

Check Benefit and Credit Payment Schedules

Filing a return can trigger or update eligibility for benefits and credits, including GST/HST-related payments, Canada Child Benefit payments, and the Advanced Canada Workers Benefit. The amounts and dates depend on household details, income, and program rules. After filing, many Canadians forget to check whether expected payments are scheduled, changed, paused, or replaced by a new program.

This matters because benefits often arrive months after the return is filed. A family may receive a reassessed amount in July based on the latest tax return, while a worker may expect advance payments later in the year. If banking details, marital status, or income information is wrong, payments may not match expectations. Checking schedules after filing turns benefits from a vague hope into a cash-flow plan.

Track Tuition Carryforwards Before They Disappear From Memory

Unused tuition amounts can carry forward, but they still need attention. The CRA says eligible tuition and carried-forward amounts must first be claimed by the student when needed to reduce tax payable, with unused amounts potentially available for future years. That makes the Notice of Assessment important for graduates who may not owe much tax immediately after school but could owe more once income rises.

The expensive mistake is losing track of the balance. A former student may change software, move provinces, start a first full-time job, and forget that tuition credits remain available. Another may try to transfer or use amounts incorrectly. A quick post-filing review of the tuition section can preserve future savings and prevent confusion when income finally rises enough for the credit to matter.

Review Home Buyers’ Plan and Lifelong Learning Plan Repayments

RRSP withdrawals under the Home Buyers’ Plan or Lifelong Learning Plan do not disappear after the purchase or education period ends. The CRA provides repayment information with the Notice of Assessment, Notice of Reassessment, or related RRSP information statement. These statements show balances and minimum repayments for the next year, which can affect future RRSP planning.

The costly oversight is treating an RRSP contribution as a normal deduction when it needed to be designated as a repayment, or missing the repayment entirely. Under the Lifelong Learning Plan, amounts not repaid when due may be included in income. For Home Buyers’ Plan participants, repayment obligations can last for years. Post-filing is the right time to note the next required amount before RRSP season arrives again.

19 Things Canadians Don’t Realize the CRA Can See About Their Online Income

Earning money online feels simple and informal for many Canadians. Freelancing, selling products, and digital services often start as side projects. The problem appears at tax time. Many people underestimate how much information the CRA can access. Online platforms, banks, and payment processors create detailed records automatically. These records do not disappear once money hits an account. Small gaps in reporting add up quickly.

Here are 19 things Canadians don’t realize the CRA can see about their online income.

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