What Are 6 Capital Gains Planning Plays to Make Before December 31?
Year-end is your final sprint to slash capital gains taxes. These 6 proven plays can save you thousands — but only if you act before the ball drops.
On this page
- Summary of What This Blog Covers
- 1. Tax-loss harvesting
- 2. Donate appreciated assets
- 3. Confirm long-term holding periods
- 4. Improve asset location
- 5. Align Q4 estimates & withholding
- 6. Lock basis documentation & Specific ID
- Year-End Capital Gains Checklist
- Book your pre-12/31 review
- Frequently Asked Questions
Summary of What This Blog Covers
- Six legal moves to cut year-end capital gains
- Loss harvesting, donations, holding periods, and basis plays
- Q4 estimate alignment + documentation that survives audit
1. Tax-Loss Harvesting
Sell losers to offset winners. Up to $3k against ordinary income + unlimited carryforward. Avoid wash sales.
2. Donate Appreciated Assets
Give stock/crypto held >1 year to charity or DAF → avoid capital gains + deduct fair-market value.
3. Confirm Long-Term Holding Periods
One extra day can drop your rate from 37% to 15–20%. Check every lot before selling.
4. Improve Asset Location
Move high-growth assets to Roth/401(k), bonds to tax-deferred. Future gains grow tax-free or tax-deferred.
5. Align Q4 Estimates & Withholding
Large Q4 gain? Bump W-4 extra or send Jan 15 estimate to stay penalty-free.
6. Lock Basis & Specific ID
Tell your broker “Specific Identification” + document cost basis. Sell high-basis shares first → lower tax.
Year-End Capital Gains Checklist (copy-paste)
☐ Run unrealized gains/losses report
☐ Harvest losses (mind wash-sale window)
☐ Donate appreciated assets to DAF/charity
☐ Verify every sale is long-term if possible
☐ Rebalance asset location
☐ Send Q4 estimate or W-4 bump
☐ Set Specific ID + save basis docs
Book your pre-12/31 capital gains review
Insogna runs lot-level modeling, coordinates donations, sets Specific ID, and hands you a one-page action plan + estimate targets. Whether you searched “capital gains tax preparer near me,” “tax advisor near you for capital gains,” or “Austin Texas CPA for year-end planning,” we make sure your gains stay yours.
Frequently Asked Questions
1) How do I find a pro who truly understands harvesting & basis?
Look for someone who models lot-level outcomes, writes a pre-12/31 action plan, and documents Specific ID at trade time.
2) Can you donate crypto or private shares?
Yes — via DAFs or platforms that accept them. Start early for valuation and paperwork.
3) Q4 sale — wait until April or pay now?
Pay via estimate or W-4 bump by Jan 15 to avoid underpayment penalties.
4) Who should verify my holding periods & Spec ID?
A year-end-focused CPA or EA who reviews every lot and sets the method with your broker.
5) Enrolled agent or CPA for capital gains?
Both work — choose the one who offers modeling + proactive documentation before 12/31.

