How Much to Set Aside for Taxes as a Partner
Becoming a partner in a law firm brings prestige, increased income, and ownership in the business. But it also comes with new responsibilities — none more immediate (or unforgiving) than managing your own taxes.
As a partner, you’re no longer a W-2 employee. Instead, you receive a Schedule K-1 reflecting your share of the firm’s income. That means:
No withholding from your paycheck
No automatic tax payments on your behalf
Full responsibility for quarterly estimated taxes
Miss a payment or miscalculate your liability, and you could face large underpayment penalties — or a painful surprise at tax time.
This article provides a practical, detailed guide for how much to set aside for taxes as a law firm partner, how to structure your payments, and how to avoid common pitfalls.
Why Partner Taxes Are So Complex
As a K-1 partner, your income is considered pass-through business income. You pay taxes on:
Your share of the firm’s profit, regardless of whether you actually received it
At your individual marginal tax rate
Plus self-employment taxes in some cases (for LLCs or partnerships without guaranteed payments)
You may also be required to:
Pay state and local taxes, including city-level levies
Participate in a Pass-Through Entity Tax (PTET) election
File multiple state returns, if your firm does business in more than one jurisdiction
None of this is withheld automatically. You must:
Estimate your total tax liability
Set aside funds throughout the year
Make quarterly estimated tax payments (April 15, June 15, Sept 15, Jan 15)
How Much Should You Set Aside?
The general rule of thumb:
Set aside 35% to 45% of your gross K-1 income throughout the year.
Let’s break it down by income level:
K-1 IncomeFederal TaxState Tax (est.)Total to Set Aside$400,000~$120,000~$25,000~$145,000 (36%)$600,000~$200,000~$35,000~$235,000 (39%)$900,000~$310,000~$50,000~$360,000 (40%)$1.2M~$420,000~$65,000~$485,000 (41%)
Note: These are rough estimates and vary by state. If you live in a no-income-tax state (e.g. Texas, Florida), your total liability may be closer to 35%. If you’re in California, New York, or New Jersey, it could easily exceed 45%.
Key Variables That Affect Your Tax Rate
Filing status — Single vs. Married Filing Jointly
State and local tax rates
Other income sources — spouse’s income, investments, rental properties
Deductions and credits — mortgage interest, charitable giving, 529 plans
Pass-Through Entity Tax (PTET) participation
Capital gains or losses
✅ Action Step: Meet with your CPA early in the year to model your projected income and tax liability based on the current year’s assumptions.
Structuring Your Tax Savings
The Problem:
Many new partners get into trouble by spending their distributions before setting aside tax reserves. This leads to:
Tax-time panic
Forced investment sales
IRS penalties
The Solution:
Treat tax savings like a non-negotiable expense.
System to follow:
Open a dedicated tax savings account
Every time you receive a firm distribution, immediately transfer 35–45% into this account
Do not use this account for any other purpose
Use the funds to make quarterly estimated payments
✅ Bonus Tip: Set up automatic transfers if possible, or batch your savings twice monthly to avoid temptation.
How Quarterly Payments Work
Estimated taxes are due four times per year:
QuarterPayment DueQ1April 15Q2June 15Q3Sept 15Q4Jan 15 (of next year)
Each payment should represent 25% of your projected annual tax liability, based on:
Current-year income estimate
Prior-year safe harbor (more on that next)
What Is the Safe Harbor Rule?
To avoid underpayment penalties, the IRS allows you to use a “safe harbor” method for estimated taxes. You can avoid penalties if you pay:
100% of last year’s tax liability, or
110% if your AGI was over $150,000
Even if your income is higher this year, the IRS won’t penalize you as long as your payments hit the safe harbor threshold.
Example:
Last year’s total tax: $300,000
Current year’s income is up
Safe harbor = $330,000 (110%)
Quarterly payments: $82,500 per quarter
✅ Use this method if your income is unpredictable — it provides penalty protection, though you may still owe more in April.
What About PTET (Pass-Through Entity Tax)?
Several states now allow pass-through entities (like law firms) to pay state income taxes at the entity level instead of on your individual return. This allows partners to:
Deduct more than the $10,000 SALT cap (on their federal return)
Reduce overall taxable income
Improve effective tax rates
If your firm participates in PTET:
They will pay state tax on your behalf
Your quarterly payments may be lower
Your CPA will adjust your federal and state liability accordingly
✅ Check with your firm: Are they making PTET payments? Are you expected to supplement with personal payments?
Coordinating with Your Firm
Every law firm handles taxes a little differently. Ask your finance or partner committee:
Will the firm provide estimated tax projections?
Does the firm make state or PTET payments?
Are distributions gross or net of withholdings?
Will they provide guidance for quarterly payment amounts?
Even if they help, the responsibility is still yours. Always confirm estimates with your CPA.
What Happens If You Underpay?
If you don’t pay enough throughout the year:
You may owe a significant lump sum in April
You could be subject to IRS underpayment penalties
Your state may impose additional interest or fees
Strategies to mitigate:
Make a catch-up payment in Q4 (by Jan 15)
File Form 2210 for penalty abatement if income fluctuated unexpectedly
Use your Q4 firm distribution to true up tax reserves
Tax-Saving Strategies for Partners
Once you’ve covered the basics, consider:
Backdoor Roth IRA contributions
Charitable giving (including donor-advised funds)
Investment tax-loss harvesting
Deferring income to a future year (if your firm allows)
Maxing out pre-tax benefits if available (HSAs, 529s, cash balance plans)
These won’t eliminate your tax bill — but they can help you manage timing and minimize drag.
Summary: Your Tax Readiness Checklist
✅ Estimate your K-1 income early in the year
✅ Calculate your total tax liability with a CPA
✅ Set aside 35–45% of each distribution
✅ Use a dedicated tax account — no exceptions
✅ Make quarterly payments on time
✅ Use safe harbor if income is volatile
✅ Track PTET and state-specific rules
✅ Avoid panic by building tax payments into your cash flow plan
Final Thoughts
Managing taxes as a law firm partner is a permanent part of the job — and one of the most important. If you treat it reactively, you’ll constantly feel behind. But if you build the right systems and buffers, tax season becomes just another part of your financial rhythm.
Want help building a tax-smart financial plan for your partner income?
Schedule a consultation with Balanced Capital and gain confidence in your estimated payments, cash reserves, and long-term wealth strategy.