In this article:
- Opening Answer
- DIY Risks
- Consultant Advantages
- Real Data
- ROI Comparison
- When DIY Might Work
- FAQ
SR&ED Success Rates: Consultant vs DIY Claims
Opening Answer
When comparing SR&ED success rates between consultant-led and DIY claims, the difference is not just approval versus rejection. It is how much you actually receive.
Most eligible businesses recover 15% to 35% of qualified costs, but DIY claims often result in 20% to 50% lower refunds due to under-claiming, weak documentation, or misaligned narratives. For example, a company eligible for a $120,000 claim may only recover $70,000 to $90,000 filing on their own.
The reason comes down to how well your claim aligns with Canada Revenue Agency (CRA) expectations, especially around technological uncertainty, documentation, and cost allocation.
DIY Risks
DIY SR&ED claims are not inherently wrong, but they carry consistent risks.
1. Under-Claiming Eligible Work
Most businesses:
- Only include obvious R&D
- Miss partial eligibility, such as 40% to 70% of development time
- Exclude supporting roles
Result: smaller claim size.
2. Weak Technical Narratives
DIY claims often describe what was built, not what was uncertain.
Example
- Weak: We improved system performance
- Strong: We tested multiple architectures because standard methods failed under load constraints
This difference directly affects claim acceptance and value.
3. Poor Documentation Structure
Common issues include:
- No record of failed attempts
- Reconstructed documentation
- Lack of testing evidence
These are highlighted in our SR&ED mistakes article.
4. Higher Audit Risk
DIY claims are more likely to:
- Trigger CRA review
- Be reduced during audit
This is often not because the work is invalid, but because it is poorly presented.
Consultant Advantages
A strong SR&ED consultant changes both success rate and claim value.
1. Better Project Identification
Consultants:
- Identify overlooked projects
- Capture partial eligibility
- Expand claim scope correctly
2. Stronger Technical Positioning
They translate engineering work into:
- Clear uncertainty
- Structured experimentation
- CRA-compliant narratives
3. Improved Financial Capture
Consultants ensure:
- All eligible labour is included
- Costs are properly allocated
- Contractor eligibility is maximized
4. Audit Readiness
Claims are prepared to:
- Withstand CRA scrutiny
- Reduce back-and-forth
- Maintain claim value
Learn how this works in practice on our SR&ED services page.
Real Data
While exact success rates vary, consistent patterns emerge across industries.
DIY Claims
- Lower average claim size
- Higher rate of reductions during review
- More documentation issues
Consultant-Assisted Claims
- Higher claim capture, often 20% to 50% more
- Stronger audit outcomes
- More consistent approvals
Real Scenario
A company initially filed DIY:
- Claimed: $180,000
- Approved: $130,000
After working with a consultant the following year:
- Identified eligible work: $260,000
- Approved: $240,000
Same business, same team, different outcome.
See similar outcomes in our case studies.
ROI Comparison
The real decision is not what a consultant costs. It is what your net return is after fees.
Scenario Comparison
DIY Filing
- Potential claim: $200,000
- Actual claim: $140,000
Consultant Filing (20% Fee)
- Optimized claim: $200,000
- Fee: $40,000
- Net: $160,000
$20,000 higher net return, even after fees.
Why This Happens
Consultants improve:
- Scope
- Documentation
- Cost capture
- Audit outcomes
The Hidden Cost of DIY
The biggest risk is not rejection. It is leaving money unclaimed.
We consistently see:
- 20% to 40% of eligible work missed
- Weak narratives reducing approval
- Avoidable audit reductions
When DIY Might Work
DIY may be reasonable if:
- Claims are small, under $20K
- Work is simple and well-documented
- Your internal team understands SR&ED criteria
When a Consultant Makes Sense
You should strongly consider expert support if:
- Your claim exceeds $50K
- You are filing for the first time
- The technical work is complex
- Documentation is limited
- You are concerned about audits
Prepare for reviews with our SR&ED audit guide.
The Bottom Line
SR&ED success is not just about approval. It is about maximizing what you receive.
DIY claims often succeed, but at a lower value. Consultant-led claims typically:
- Capture more eligible work
- Reduce risk
- Deliver higher net returns
FAQ
What is the success rate of SR&ED claims?
Most properly prepared claims are accepted, but the real difference is in claim size and audit outcomes.
Are consultant-led SR&ED claims more successful?
Yes. They generally produce higher claim value and fewer reductions during review.
Is DIY SR&ED worth it?
It can work for small or simple claims, but it often results in under-claiming.
Do consultants increase claim size?
Yes, often by 20% to 50% or more through better identification and documentation.
Is hiring a consultant worth the cost?
In most cases, yes, because net recovery is higher even after fees.
Next Step
Most businesses do not realize how much they are under-claiming until they compare.
We regularly identify:
- Missed eligible work
- Weak technical narratives
- Lost claim value
A second look can quickly show the difference.