Last Updated: October 28, 2026
Quick Summary
To switch accounting firms mid fiscal year, confirm your fiscal year end and open filings, check your engagement letter's notice terms, then send written notice and transfer records and system access before your next deadline. Most mid-year switches take two to six weeks, so start at least six weeks before your next major deadline.
- Most mid-year switches take two to six weeks, with much of that time spent waiting on records and access changes.
- Send written notice per your engagement letter, which often requires 30 days and may bill for work in progress.
- Add the incoming firm to systems before removing the outgoing firm to avoid an access gap.
- Never let a filing deadline fall inside the gap between two engagement letters; assign it in writing.
- A trial balance without a reconciliation status is not a handover, so insist on a written statement of what is reconciled.
Table of Contents
- Why Business Owners Switch Accounting Firms Mid Fiscal Year
- Your Switching Accountants Checklist for a Clean Handover
- How Long Does It Take to Switch Accountants?
- Reviewing the Engagement Letter and Ending the Old Agreement
- Transferring Records, Reconciliations and System Access Safely
- Using an Accountant Handover Letter Template to Set Expectations
- Questions to Ask a New Accountant Before You Sign
- Book a Mid-Year Transition Consultation with Lira Tax & Accounting
- Frequently Asked Questions
Why Business Owners Switch Accounting Firms Mid Fiscal Year
When you switch accounting firms mid fiscal year, you move your bookkeeping, tax preparation, and advisory work to a new accountant partway through the year without losing records, missing deadlines, or breaking your engagement contract.
Most owners wait until tax season, the worst time to move. A mid-year switch gives both firms room to plan and protects your year-end close.
Signs Your Current Firm Is Holding You Back
Watch for these signals before they cost you money:
- Missed or late deadlines for T2 filings, CRA remittances, or T4s
- Slow turnaround on questions that should take a day, not a week
- Communication gaps where you chase your accountant instead of the reverse
If two or more sound familiar, the cost of staying is higher than the cost of moving. Weighing local versus remote? Our guide on hiring a local accountant vs a remote firm breaks down the trade-offs.
Your Switching Accountants Checklist for a Clean Handover
A switching accountants checklist keeps the handover boring, which is exactly what you want. Work through it in order:
- Confirm your fiscal year end and every open filing
- Pull your engagement letter and check notice terms
- List all system access your current firm holds
- Gather year-to-date financial statements and reconciliations
- Collect prior-year returns and CRA correspondence
- Document open questions and unfinished work
- Interview and select the new firm
- Send a written handover request to the old firm
- Transfer records and access
- Confirm the new firm has everything before the first deadline
How Long Does It Take to Switch Accountants?
Most mid-year switches take two to six weeks, but only a fraction is actual work, the rest is waiting on records, signatures, and access changes. Firms that switch cleanly run the handover as a dated project. Here is a six-week sequence you can compress or stretch to fit your deadline calendar.
A Six-Week Mid-Year Transition Timeline
Week 3, Send written notice. Deliver the handover letter per the notice terms in your engagement letter.
Week 4, Receive and reconcile. Take delivery of the general ledger, trial balance, reconciliations, prior-year returns, CRA correspondence, and payroll records.
Week 5, Transfer access and authority. Update CRA Represent a Client, accounting software permissions, payroll accounts, and banking read-only access.
Week 6, Parallel check and go-live. Run one pay period or one reporting cycle in parallel if payroll is involved.
What Actually Drives the Timeline
- Records readiness: clean books move in days; unreconciled accounts add catch-up work.
- Outgoing firm responsiveness: some release files within a week, others take the full notice period. Written requests with dates move faster than phone calls.
- Open reconciliations: unfinished bank or credit card reconciliations must be closed or documented, because the incoming firm cannot certify opening balances it cannot support.
Who Is Responsible During the Transition
The most common mid-year failure is assuming someone else is handling a filing. Put this in writing before week 3:
- Outgoing firm: responsible for work completed and billed through the termination date, and for delivering records and working papers it holds. Confirm in writing which returns it has filed and which it has not.
- Incoming firm: responsible from the effective date of the new engagement letter, including the next return or remittance due after that date. Get this confirmed in the letter.
- You: responsible for the accuracy of what you provide, for signing the notice, and for confirming access changes actually happened. A portal invitation does not equal completed access.
Start at least six weeks before your next major deadline, and never start the week a remittance is due.
Here is the six-week mid-year transition sequence the article recommends, which you can compress or stretch to fit your deadline calendar.
| Week | What to do |
|---|---|
| Week 1 | Decide and document: confirm fiscal year end and open filings |
| Week 2 | Select and scope: interview firms, get written scope |
| Week 3 | Send written notice per engagement letter notice terms |
| Week 4 | Receive and reconcile records; review opening balances |
| Week 5 | Transfer access and authority; remove outgoing firm last |
| Week 6 | Parallel check and go-live; confirm next filing scheduled |
Reviewing the Engagement Letter and Ending the Old Agreement
Read your engagement letter before you say a word to anyone. It defines your scope of services, notice period, and what you owe when you leave. Most letters require written notice, often 30 days, and some bill for work in progress.
Notice Periods, Termination Terms and Outstanding Fees
Check these four items in writing:
- Notice period: how much advance warning the firm requires
- Termination terms: whether you can leave mid-year and what triggers a fee
- Outstanding fees: what you owe for completed work
A common mistake is leaving verbally and assuming it is done. Send written notice, keep a copy, and ask for confirmation. If a fee dispute arises, pay what you clearly owe for completed work and document the rest. Your new accountant can work around an open invoice, but not without your records.
Transferring Records, Reconciliations and System Access Safely
Records transfer is where mid-year switches quietly go wrong. Your outgoing firm may hold the accounting software file, payroll login, CRA authorization, and working papers. The goal is not just to receive files, it is to establish a clean year-to-date close status so the incoming firm can pick up without rework or guessing at opening balances.
The Year-to-Date Close Status Checklist
Before you request anything, find out exactly where the books stand. Ask the outgoing firm to confirm, in writing:
- Bookkeeping cutoff: the date through which transactions have been entered and reconciled
- Bank and credit card reconciliations: which accounts and months are reconciled, and which are open
- Accounts receivable and payable: whether subledgers tie to the general ledger and whether any balances are disputed
Records to Request in Writing
Ask for all of the following, and specify the format (PDF, CSV, or accounting software export):
- Year-to-date trial balance and general ledger
- Bank and credit card reconciliations through the latest closed month
- Prior-year financial statements and tax returns
Transferring System Access Without Leaving a Gap
Access is the part that stalls transitions for weeks. Work through it in this order:
- Inventory every system the outgoing firm can access: accounting software, payroll platform, CRA Represent a Client, banking read-only access, document portals, and shared drives.
- Add the incoming firm before removing the outgoing firm to avoid a window where no one can file or view records.
- Change passwords and revoke sessions on any account where the outgoing firm had credentials, rather than relying on the firm to remove itself.
- Confirm CRA authorization by checking Represent a Client for the business number, do not assume the request went through.
- Document the effective date of each access change in writing.
Keeping Financial Statements Comparable Across Firms
A mid-year switch means two firms will touch the same fiscal year. To keep management reports useful, agree on consistent accounting policies, confirm opening balances tie to the prior-year filed return, and document any prior-period adjustments the incoming firm proposes. If the outgoing firm used a different revenue recognition or inventory method, the incoming firm should note the change rather than silently restate.
Using an Accountant Handover Letter Template to Set Expectations
An accountant handover letter template is a short written request that tells your old firm exactly what to send, to whom, and by when. It removes ambiguity and creates a paper trail.
Use this structure:
Subject: Request for transfer of accounting records
Dear [Firm name],
This letter confirms that [Business name] is ending its engagement effective [date], per the notice terms in our engagement letter dated [date].
Please provide the following by [date]:
- Year-to-date general ledger and trial balance
- Bank and credit card reconciliations through [month]
- Prior-year financial statements and tax returns
- CRA correspondence and remittance confirmations
- Payroll records, T4s, and ROEs
- A list of open items and work in progress
Please also remove our firm from your systems and confirm the date access ends. Send everything through [secure method].
Sincerely, [Name, title, business name]
Send it by email, keep the confirmation, and follow up in writing if the deadline passes.
Questions to Ask a New Accountant Before You Sign
The right questions separate a firm that can handle a mid-year handover from one that will create a second mess. Ask these before you sign:
- Can you take over mid-year without waiting for our year end?
- How will you handle opening balances and prior-period adjustments?
- Who files our T2 and what is your process for CRA correspondence?
Get the answers in writing, ideally in the new engagement letter.
Book a Mid-Year Transition Consultation with Lira Tax & Accounting
A mid-year switch is manageable when you plan it and painful when you improvise. Firms that get it right treat the handover as a project with dates, owners, and a written scope.
We have spent over a decade helping incorporated businesses, startups, and professional corporations stay compliant with Canadian tax rules.
Get started with Lira Tax & Accounting. Get in touch to book your free mid-year transition consultation.
Add liratax.ca as a preferred source on Google →Frequently Asked Questions
Can you switch accounting firms in the middle of a fiscal year?
Plan the handover so open bookkeeping, reconciliations and payroll filings stay current. Agree a cut-off date with both firms, confirm who files any returns due during the transition, and get written confirmation of the handover from your old accountant.
Will changing accountants affect my tax filings or payroll?
A handover can affect filings or payroll if responsibilities are unclear. Assign responsibility in writing: either the outgoing firm completes filings up to the cut-off date or the new firm takes over from a stated date.
What documents should I get from my current accountant?
Ask for accounting records such as the general ledger, trial balance, bank and credit card reconciliations, payroll records, prior-year financial statements and tax returns, and CRA correspondence. Request a year-to-date close status so the new firm knows which periods are finalized and which are still open. Keep copies of everything yourself.
How do I tell my accountant I am switching firms?
Keep it short and professional in writing. Thank them for their work, state the effective date of the change, and name the new firm so they can coordinate the handover directly. Ask for a final invoice and confirm what open items they will complete before the cut-off. You do not need to justify the decision in detail.
