Colorado Inheritance Tax Forms: Guide for Beneficiaries

If you've recently lost someone and you're set to receive an inheritance in Colorado, you're probably wondering what tax forms you need to file and how the whole process works. Here's the first thing to know: Colorado does not have a state inheritance tax. That's good news. But there are still federal tax forms, income reporting requirements, and probate documents you'll need to handle. Missing any of these steps can delay what you're owed or create problems with the IRS down the line. This guide walks you through each form, who files it, and in what order so you can move forward with confidence.

Does Colorado actually have an inheritance tax?

No. Colorado repealed its state-level estate and inheritance tax for deaths occurring on or after January 1, 2005. Unlike states such as Maryland, Nebraska, or Pennsylvania, Colorado does not tax beneficiaries for receiving an inheritance. You won't find a Colorado-specific inheritance tax form to fill out because one doesn't exist.

However, that doesn't mean you're done with paperwork. You may still need to deal with federal estate tax filings, income tax on inherited assets, and various probate court documents depending on the size and type of the estate.

What forms does a beneficiary actually need to file?

The forms you're responsible for depend on your relationship to the deceased, the type of assets you inherit, and their total value. Here's a breakdown:

Federal estate tax return (IRS Form 706)

This is filed by the executor or personal representative of the estate not the beneficiary directly. It's only required when the gross estate exceeds the federal exemption threshold, which is $13.61 million per individual for 2024. If the estate is under that amount, this form typically isn't needed. Most Colorado estates fall below this threshold.

IRS Form 1099-S and capital gains reporting

If you inherit assets like real estate or stocks and later sell them, you may owe capital gains tax on the appreciation that occurs after the date of death. The cost basis of inherited property is "stepped up" to its fair market value at the time of death, which often reduces or eliminates capital gains. You'll report any sale on Schedule D of your federal tax return (Form 1040).

Income tax on inherited retirement accounts

If you inherit a traditional IRA or 401(k), distributions you take are taxed as ordinary income. You'll receive a Form 1099-R for any distributions, and you report that income on your personal tax return. Under the SECURE Act, most non-spouse beneficiaries must withdraw all funds within 10 years of the original owner's death.

Colorado state income tax considerations

While there's no inheritance tax, inherited income (such as distributions from retirement accounts or rental income from inherited property) is subject to Colorado's flat 4.4% state income tax. You'll report this on your Colorado Form 104.

What probate documents do beneficiaries need to deal with in Colorado?

Before you receive anything, the estate typically goes through probate. The personal representative handles most of the court filings, but as a beneficiary, you should understand the process and what documents are involved.

The required paperwork to transfer property after death in Colorado includes the will (if one exists), a petition for probate, and various court filings. You can learn more about what paperwork is needed to transfer property after a death in Colorado.

Colorado probate courts have specific filing deadlines and fee structures. Missing a deadline can stall the entire process. You can review Colorado probate document filing deadlines and fees to stay on track.

Does the size of the estate change which forms are needed?

Yes, and this is where many people get confused. Colorado has a small estate shortcut that can simplify things significantly.

If the estate's total value is $82,000 or less (as of 2024) and doesn't include real property, beneficiaries may be able to use a small estate affidavit instead of going through formal probate. This affidavit lets you collect assets directly from banks or financial institutions with minimal court involvement. The requirements and instructions for this are specific see Colorado small estate affidavit requirements and instructions for the details.

For larger estates or those involving real property, formal probate is required. The personal representative will need to file an inventory, notify creditors, pay debts, and eventually distribute assets according to the will or Colorado's intestate succession laws.

Step-by-step: What to do when you're a beneficiary in Colorado

Get a copy of the death certificate. You'll need certified copies for financial institutions, the court, and tax filings. Order at least 10.
Determine if probate is required. Check whether the estate qualifies for a small estate affidavit or needs formal probate. If the deceased had a will, locate it and file it with the probate court in the county where they lived.
Wait for the personal representative to be appointed. The court issues Letters Testamentary, which give the executor legal authority to act on behalf of the estate.
Review the estate inventory. The personal representative must file an inventory of assets with the court. As a beneficiary, you have the right to review this.
Understand what you're inheriting and how it's taxed. Cash, real estate, stocks, retirement accounts, and personal property each have different tax implications. See the step-by-step forms and filing process for Colorado beneficiaries for a detailed walkthrough.
File your personal income tax return. Report any inherited income, retirement distributions, or capital gains from the sale of inherited assets. Use federal Form 1040 and Colorado Form 104.
Transfer titles and accounts. Work with the personal representative to retitle real estate, vehicles, bank accounts, and investment accounts in your name.

Common mistakes beneficiaries make with inheritance tax and forms

Assuming they owe Colorado inheritance tax. They don't. Colorado has no inheritance tax. But people sometimes confuse this with federal estate tax or income tax on inherited assets.
Failing to report inherited income. Inheriting an asset isn't taxable, but income generated by that asset (or distributions from retirement accounts) is. The IRS receives copies of 1099s, so unreported income can trigger a notice.
Not getting a stepped-up basis. If you sell inherited property, make sure your cost basis reflects the fair market value at the date of death not the original purchase price. This can save you thousands in capital gains tax.
Missing probate deadlines. Colorado courts have strict timelines. If you're also serving as the personal representative, review how to file inheritance documents in Colorado probate court to avoid costly delays.
Ignoring the 10-year rule for inherited IRAs. Non-spouse beneficiaries of traditional IRAs must empty the account within 10 years. Failing to plan for this can result in a large, unexpected tax bill.

Do I need a tax professional, or can I handle this myself?

For simple estates say, a bank account and some personal property under the small estate threshold you may be able to handle everything on your own with the affidavit process. But if the estate includes real property, retirement accounts, business interests, or assets above the federal exemption, working with a CPA or tax attorney familiar with Colorado probate is money well spent. The IRS offers guidance on filing requirements for deceased taxpayers that can help you understand your obligations.

Quick checklist for Colorado beneficiaries

Before you consider your inheritance process complete, make sure you've handled each of these:

Ordered certified death certificates
Confirmed whether probate or a small estate affidavit applies
Reviewed the estate inventory filed with the court
Determined tax basis for inherited property (stepped-up basis)
Reported all inherited income on federal and Colorado state returns
Planned for required distributions from inherited retirement accounts
Transferred titles, deeds, and account ownership
Kept copies of all filings and correspondence for your records

Next step: If you haven't started the probate process yet, begin by determining the estate's total value and whether it qualifies for simplified procedures. Then gather the documents you'll need and file with the appropriate Colorado probate court. Acting sooner rather than later keeps the process moving and protects your rights as a beneficiary.