Tax Efficiency Score Explained
How sharper.tax turns benchmarking data and strategy usage into a single tax score.
The tax efficiency score helps you see how you compare to peers and how much opportunity you still have left.
Key Takeaways
- Lower tax burden percentile means a higher score.
- Strategy utilization is included so the score reflects action, not just luck.
- The score updates as you implement strategies.
Two Inputs: Benchmarking + Strategy Use
- Benchmarking: We compute a percentile rank based on your effective tax rate and income.
- Strategy utilization: We count how many recommended strategies are already implemented.
The score combines both so you are not rewarded for low taxes you cannot control. Understanding your effective tax rate and marginal tax rate is foundational to interpreting the benchmark component.
How the Score Is Calculated
The tax efficiency score uses a weighted formula. This is a simplified representation—the actual implementation includes additional smoothing and edge-case handling.
Score = (Benchmark Component × 0.6) + (Strategy Component × 0.4)Benchmark Component (60% of score):
- We compare your effective tax rate to others with similar income.
- If your rate is lower than average, this boosts your score.
- Range: 0-100 based on your percentile rank.
Strategy Component (40% of score):
- We count how many available strategies you’re already using.
- Example: If 5 strategies apply to you and you’re using 3, that’s 60% utilization.
- This rewards intentional action, not just luck or low income.
Example
Filer A: $150,000 income, 18% effective rate, using 2 of 6 applicable strategies
- Benchmark: 70th percentile among peers = 70 points
- Strategy utilization: 2/6 = 33% = 33 points
- Score: (70 × 0.6) + (33 × 0.4) = 42 + 13 = 55
Filer B: $150,000 income, 14% effective rate, using 5 of 6 applicable strategies
- Benchmark: 90th percentile = 90 points
- Strategy utilization: 5/6 = 83% = 83 points
- Score: (90 × 0.6) + (83 × 0.4) = 54 + 33 = 87
Common Strategies That Improve Your Score
The strategy component rewards actions you can take regardless of income level. Here are some of the most common moves that boost your score:
- Maximize retirement contributions — Traditional IRA, 401(k), or Solo 401(k) contributions reduce taxable income and signal active planning.
- Use an HSA — The HSA triple tax advantage is one of the highest-impact strategies for eligible filers.
- Optimize deductions — Choosing between the standard deduction and itemizing based on your specific situation rather than defaulting to one.
- Implement Roth strategies — A backdoor Roth IRA or mega backdoor Roth does not reduce current-year taxes but signals long-term tax planning.
- Harvest losses — Tax loss harvesting offsets capital gains and can improve your effective rate relative to peers.
For a complete list of strategies organized by income level, see the high-income tax strategies guide or the tax strategy stacking guide.
Why It Matters
A low score means you likely have meaningful optimization opportunities. A high score means you are already doing many of the right things.
For the details on benchmarking methodology, see Income tax rate benchmarking. To understand where your income falls in the national distribution, see our U.S. income distribution benchmarks.
Score Interpretation Guide
| Score Range | Interpretation | Suggested Next Step |
|---|---|---|
| 80-100 | Excellent — you are using most available strategies | Fine-tune timing and review for advanced moves |
| 60-79 | Good — some optimization opportunities remain | Review your action plan for low-hanging fruit |
| 40-59 | Fair — meaningful savings are likely available | Start with the top 2-3 recommended strategies |
| Below 40 | Needs attention — significant optimization gap | Prioritize retirement contributions and deduction optimization |
How sharper.tax Uses the Score
When you upload your return, sharper.tax computes your tax efficiency score automatically. The score combines your effective tax rate benchmarking with a personalized strategy checklist — showing both where you stand and what moves could improve your position. You can read more about how we analyze returns in our how sharper.tax analyzes your return guide. Sophisticated tax planning used to require a high-end CPA — we make it available for free.
Sources
The information above is educational and not tax advice.