Common SR&ED Mistakes to Avoid (2024)

SR&ED claims are frequently reduced or denied due to avoidable mistakes. Learning from common errors helps you maximize your claim and reduce audit risk. This guide covers the most costly mistakes and how to avoid them.

Mistake #1: Waiting Until Year-End

The Problem

Starting SR&ED documentation only at year-end forces you to:

Reconstruct projects from memory
Create documentation after the fact
Miss eligible projects forgotten over time
Rush the process, resulting in poor quality

The Impact

Lower claim values (missing 30-50% of eligible work)
Weaker documentation (not contemporaneous)
Higher audit risk

The Fix

Quarterly reviews to identify SR&ED projects
Document as you go (even brief notes)
Tag projects in your PM tool as potential SR&ED
Review at year-end to capture everything

Mistake #2: Claiming Routine Work as SR&ED

The Problem

Claiming work that doesn't involve technological uncertainty:

Standard software development
Routine engineering
Minor improvements
Bug fixes without investigation

The Impact

CRA denials and adjustments
Triggers technical review
Damages credibility for future claims

The Fix

Apply the 5-question test to each project:

Was there technological uncertainty?
Did you formulate hypotheses?
Was there systematic experimentation?
Was it by qualified personnel?
Was there technological advancement?

If you can't answer yes to all five, it's not SR&ED.

Mistake #3: Poor Technical Narratives

The Problem

Vague, generic project descriptions:

"We developed a new product"
"We improved our system"
"We created software for clients"

The Impact

CRA can't assess eligibility
Appears routine rather than SR&ED
Triggers requests for clarification
Claims reduced or denied

The Fix

Structure narratives to show:

Technological uncertainty - What didn't you know?
Hypothesis - What did you think would work?
Experimentation - What did you test?
Advancement - What did you learn?

Good example: "We faced uncertainty in achieving real-time processing of 1M events/second with sub-100ms latency. We hypothesized a streaming architecture would outperform batch. We tested 5 configurations, measured latency and throughput. We achieved 1.2M events/second at 65ms latency through novel partitioning approach."

Mistake #4: No Time Allocation Support

The Problem

Claiming salaries without reasonable allocation basis:

No time tracking
100% allocation without justification
Retroactive estimates without methodology

The Impact

Salaries reduced during review
Requested to provide support (which you don't have)
Damages credibility

The Fix

Implement time tracking (even rough estimates)
Document your allocation methodology
Keep records by project or activity
Reasonable consistency is key—perfection not required

Mistake #5: Missing Eligible Projects

The Problem

Only claiming obvious R&D and missing:

Process improvements
Quality problem-solving
Failed projects
Supporting work
Work in non-R&D departments

The Impact

Leaving 30-50% of eligible credits unclaimed
Missing substantial tax savings

The Fix

Review all departments for technical challenges
Include failures—they're strong SR&ED evidence
Consider supporting work (engineering, testing, design)
Use consultants who can identify what you miss

Mistake #6: Ignoring Provincial Credits

The Problem

Only claiming federal SR&ED when you're in Quebec or Ontario, missing:

Quebec R&D credit (30% on salaries)
Ontario OITC (8% on expenditures)

The Impact

Missing 8-30% additional credit
Significant lost value (thousands to hundreds of thousands)

The Fix

Always claim provincial credits in Quebec and Ontario
File with provincial tax return
Consider provincial requirements in documentation

Mistake #7: Missing the Deadline

The Problem

Filing after 18 months from fiscal year-end—there is no extension.

The Impact

Complete forfeiture of eligibility for that year
Cannot be recovered

The Fix

Calendar reminders for deadline
Start preparation 4-6 months before deadline
Don't wait for finalized tax return

Mistake #8: Discarding "Failed" Evidence

The Problem

Throwing away:

Failed experiments
Abandoned approaches
Prototypes that didn't work
Test results showing failure

The Impact

Missing strong SR&ED evidence
Can't demonstrate experimentation
Weakened claims

The Fix

Keep everything—failures are valuable
Document what you learned from failures
Treat failed projects as eligible SR&ED

Mistake #9: DIY on Complex Claims

The Problem

First-time claimants or large claims without professional help:

Don't know what qualifies
Miss eligible projects
Write weak narratives
Make calculation errors

The Impact

30-50% lower claims than with professional help
Higher audit risk
No support if reviewed

The Fix

Use professionals for first claims
Get help for large or complex claims
Consultants typically more than pay for themselves

Professional Services to Avoid DIY Mistakes:

Claim Preparation Services - Professional claim filing and optimization
Eligibility Assessment Services - Ensure you capture all eligible work
Project Identification Services - Find missed SR&ED opportunities

Find SR&ED Consultants →

Mistake #10: Inconsistent Year-Over-Year

The Problem

Dramatic changes without explanation:

Claim doubles or halves suddenly
New types of projects appear
Different calculation methods

The Impact

Triggers CRA review
Appears suspect

The Fix

Document reasons for changes
Maintain consistent methodology
If business changes justify claim changes, explain them

Mistake #11: Over-Volunteering Information

The Problem

When CRA asks questions, providing:

Far more than requested
Information that raises new questions
Contradictory statements

The Impact

Extends review
Opens new areas of inquiry
May hurt your case

The Fix

Answer specifically what was asked
Be accurate and consistent
Don't speculate
Consult professional before responding

Mistake #12: Poor Contractor Documentation

The Problem

Contractor payments without:

Contracts specifying SR&ED work
Detailed invoices
Evidence of SR&ED performed

The Impact

Contractor costs denied
Missing 80% of eligible payments

The Fix

Contracts should specify SR&ED activities
Invoices should detail work performed
Document deliverables received

Red Flags That Trigger Audits

Avoid these patterns:

First-time claims (often reviewed educationally)
Large claims (>$500K)
Dramatic year-over-year changes
Vague project descriptions
100% salary allocations
Contractor-heavy claims without detail
New company types claiming (e.g., marketing firm claiming software)

Prevention Checklist

Before filing:

All projects have clear technical narratives
Time allocations are reasonable and supported
Expenditure calculations are accurate
Provincial credits filed (if applicable)
Documentation organized and accessible
Methodology is consistent with prior years
Filed before deadline

Frequently Asked Questions

What's the biggest mistake companies make?

Missing eligible projects. Most companies claim only 50-70% of their eligible work due to poor identification.

Can I fix mistakes from prior years?

You can amend returns up to 3 years back, but after-the-fact documentation is weaker.

Should I be conservative to avoid audit?

Not excessively. Claim what you're entitled to with proper documentation. Being too conservative leaves money on the table.

What if I've already made these mistakes?

Learn from them. Improve documentation, use professionals, implement better practices for next year.

Next Steps

Audit your current practices against this list
Implement fixes for identified weaknesses
Start documentation improvements now
Consider professional help for upcoming claims
Build systems for consistent claiming

Get Expert Help Avoiding These Mistakes:

Claim Preparation Services - Ensure your claim is optimized and compliant
Compliance Review Services - Verify your claim is defensible
Find SR&ED Consultants →

Last updated: November 2024. Consult a qualified SR&ED professional for your specific situation.