What Taxes Will Retirees Pay in Colorado?

Retirement planning is not just about whether you have enough money saved.

It is also about how much of that money you actually get to keep after taxes.

For Colorado retirees, taxes can show up in several different places: Social Security, pensions, IRA withdrawals, investment accounts, property taxes, sales taxes, and even Medicare premiums if your income is high enough.

The good news is that Colorado has some tax rules that can be helpful for retirees. The less-good news is that the rules can be confusing, and they can change over time.

This article is meant to give you a plain-English overview of the taxes Colorado retirees should understand. It is not meant to be a technical tax manual, and it is not a substitute for personalized tax advice.

Tax laws change. Your personal situation matters. But understanding the basics can help you ask better questions and make more thoughtful retirement decisions.

But first, Winding Trail Financial Planning is a fee-only financial advisor based in Lafayette, Colorado servicing Lafayette, Louisville, Erie, Broomfield, Boulder, and the surrounding areas. We do our best work with retirees, near-retirees, and business owners

Does Colorado Tax Retirement Income?

Yes, Colorado can tax retirement income, but certain types of retirement income may qualify for state tax subtractions.

Colorado starts with your federal taxable income and then makes certain Colorado-specific adjustments. In other words, your federal tax return usually drives much of the Colorado tax calculation.

That means income such as IRA withdrawals, pension income, annuity income, taxable Social Security, interest, dividends, capital gains, and part-time work can all potentially matter.

Colorado does allow certain subtractions for pension and annuity income, including some Social Security benefits, IRA distributions, pensions, and annuity income that are included in federal taxable income. The Colorado Department of Revenue says qualifying taxpayers age 55 or older may generally claim a pension and annuity subtraction, limited to $20,000 per year, or $24,000 for individuals age 65 or older. For joint filers, each spouse generally determines eligibility separately.  

That can be helpful, but it does not mean retirement income is automatically tax-free.

The details matter.

Is Social Security Taxed in Colorado?

Social Security taxation is one of the most common areas of confusion for retirees.

At the federal level, some of your Social Security benefits may be taxable depending on your other income. This includes things like IRA withdrawals, pension income, wages, interest, dividends, and capital gains.

At the Colorado level, the rules have become more favorable for many retirees.

For Colorado taxpayers age 65 or older, Colorado allows a subtraction for the full amount of Social Security benefits included in federal taxable income. Beginning with tax years 2025 and later, taxpayers age 55 to 64 may also be able to subtract the full amount of federally taxable Social Security benefits if their adjusted gross income is within certain limits: $75,000 for single filers or $95,000 for joint filers.  

That is helpful, but there are two important planning points.

First, even if Colorado allows a subtraction, Social Security may still be taxable on your federal return.

Second, the way you draw income from your portfolio can affect how much of your Social Security is federally taxable.

For example, a large IRA withdrawal, Roth conversion, or capital gain could cause more of your Social Security to become taxable federally. That may also affect Medicare premiums in some situations.

So the question is not just, “Does Colorado tax Social Security?”

The better question is:

“How does my full retirement income plan affect my total tax bill?”

Are IRA and 401(k) Withdrawals Taxed in Colorado?

Traditional IRA and 401(k) withdrawals are generally taxable at the federal level. They may also be taxable in Colorado, although they may qualify for Colorado’s pension and annuity subtraction if you meet the requirements.

The Colorado Department of Revenue includes certain IRA distributions among the types of income that may qualify for the pension and annuity subtraction, but the subtraction is subject to eligibility rules and annual limits.  

This is one reason retirement tax planning matters.

A $1,000,000 IRA is not the same as a $1,000,000 Roth IRA or a $1,000,000 taxable brokerage account.

With a traditional IRA or 401(k), taxes have generally been deferred. You may not owe tax while the money grows inside the account, but withdrawals are usually taxable later.

That can create several planning issues:

You may face required minimum distributions later in retirement.

Large IRA withdrawals can increase your taxable income.

Higher income can affect Social Security taxation.

Higher income can also affect Medicare IRMAA premiums.

A surviving spouse may eventually be taxed at less favorable single tax brackets.

None of this means traditional retirement accounts are bad. They are often very valuable. But they need to be managed thoughtfully.

Are Roth IRA Withdrawals Taxed in Colorado?

Qualified Roth IRA withdrawals are generally tax-free at the federal level and are not usually taxed by Colorado either.

That is one reason Roth accounts can be so useful in retirement.

Roth money may give you more flexibility in years when you want to avoid increasing taxable income. For example, Roth withdrawals may help pay for a large expense without triggering additional federal income tax, pushing more Social Security into taxable income, or increasing Medicare premiums.

That said, Roth conversions are different from Roth withdrawals.

A Roth conversion means moving money from a traditional IRA or pre-tax retirement account into a Roth IRA. The converted amount is generally taxable in the year of the conversion.

For some Colorado retirees, Roth conversions can make sense. For others, they may create more tax cost than benefit.

The key is to compare the tax cost today against the expected tax savings later.

Are Pension and Annuity Payments Taxed in Colorado?

Pension and annuity income may be taxable at the federal level and may also be taxable in Colorado.

However, Colorado’s pension and annuity subtraction may apply to some of this income. The general subtraction limit is $20,000 for qualifying individuals age 55 or older and $24,000 for individuals age 65 or older.  

This can be especially relevant for retirees with:

PERA benefits

Private pensions

Military retirement benefits

Annuity income

IRA distributions

Inherited retirement income in some cases

Going back to the above question regarding Roth IRAs, in some situations, it can make sense to trigger Roth conversions for federal tax purposes but those conversions may trigger additional Colorado income tax as it can push a taxpayer above the aforementioned limits. Just something to consider.

The important point is that not all retirement income receives the same treatment. The source of the income, your age, your filing status, and the amount of income all matter.

How Are Taxable Investment Accounts Taxed?

Taxable brokerage accounts are different from IRAs and Roth IRAs.

In a taxable investment account, you may pay tax on:

Interest

Dividends

Capital gains when investments are sold

Mutual fund capital gain distributions

The tax treatment depends on the type of income.

For example, qualified dividends and long-term capital gains may receive more favorable federal tax treatment than ordinary income. Interest from bank accounts, CDs, and many bonds is generally taxed as ordinary income.

Colorado generally taxes income that is included in your federal taxable income, subject to Colorado-specific rules and adjustments.

This is why the location of your investments matters.

The same portfolio can create very different tax results depending on whether assets are held in a traditional IRA, Roth IRA, taxable brokerage account, HSA, or trust.

What About Colorado Property Taxes?

Property taxes are a major retirement planning item, especially for homeowners in Lafayette, Boulder County, and other parts of the Front Range.

Even if your mortgage is paid off, your home is not free to own.

You may still have:

Property taxes

Homeowners insurance

HOA dues - common in many Front Range communities

Maintenance

Repairs

Utilities

Property taxes can be easy to overlook when you are still working because they may be paid through escrow as part of your mortgage payment. But in retirement, especially if the mortgage is paid off, property taxes can become a more visible cash-flow item.

For retirees living in high-value homes, this deserves attention.

A paid-off home can provide stability and peace of mind. But it can also represent a large, illiquid asset that still has ongoing costs.

Colorado Senior Property Tax Exemption

Colorado has a senior property tax exemption that may help some homeowners.

According to the Colorado Division of Property Taxation, a qualifying senior generally must meet these requirements:

The applicant must be at least 65 years old on January 1 of the year they apply.

The applicant or their spouse must be the property owner of record and must have owned the property for at least 10 consecutive years before January 1.

The applicant must occupy the property as their primary residence and must have done so for at least 10 consecutive years before January 1.

A surviving spouse of a previously qualified senior citizen may also be eligible if they have not remarried.  

The application period generally begins January 1 and ends July 15. Applications are submitted to the county assessor where the property is located.  

This exemption can be valuable, but it is not automatic. You need to apply, and you need to meet the eligibility requirements.

For retirees in Boulder County or nearby Colorado communities, this is worth reviewing as part of your retirement cash-flow plan.

It's important to be mindful of the ownership and occupancy requirements especially if a retiree is considering downsizing or moving from say Lafayette to Winter Park as the new property would have a new clock.

Does Colorado Have an Estate or Inheritance Tax?

Under current law, Colorado does not require an estate tax filing for estates of individuals who die after December 31, 2004. The Colorado General Assembly explains that changes to federal law effectively eliminated Colorado’s estate tax for individuals dying after that date.  

That said, estate planning still matters.

Even if Colorado does not currently have a separate estate tax, retirees may still need to think about:

Federal estate tax for larger estates

Beneficiary designations

Inherited IRA rules

Trust planning

Probate

Titling of accounts and real estate

Step-up in basis

Family dynamics

Charitable giving

Estate planning is also a political football and the rules can change quickly.

Estate planning is not only about estate taxes. It is also about making sure your assets transfer efficiently and according to your wishes.

My "joke" that I use with families is that everyone has an estate plan: it just depends if it's one they've intentionally created or one that will be given to them via the Colorado probate process.

What About Sales Tax?

Colorado also has sales tax, and local sales taxes can vary depending on where you live and shop.

For retirees, sales tax is usually more of a budgeting issue than a tax-planning issue. But it still matters, especially if you are comparing Colorado to another state or deciding whether to relocate.

And because sales tax rates vary by location, some of the more desirable resort based mountain towns can have higher than average sales taxes which helps offset many of the great benefits such as free public transportation, as an example. It may not make or break your plan but you may wince just a bit in towns like Winter Park, Idaho Springs, and Snowmass Village where the current total sales tax can be north of 10%.

Income taxes tend to get more attention, but your full cost of living includes property taxes, sales taxes, insurance, healthcare, housing, transportation, and everyday spending.

A state with lower income taxes is not always cheaper overall.

Common Tax Planning Opportunities for Colorado Retirees

Retirement creates a planning window.

You may have a few years after you stop working but before Social Security, Medicare, or required minimum distributions begin. Those years can be especially valuable.

Here are a few areas to review.

1. Roth Conversions

A Roth conversion can make sense if you are in a lower tax bracket now than you expect to be in later.

This often comes up between retirement and required minimum distributions.

But Roth conversions need to be coordinated carefully. They can increase taxable income, affect Medicare premiums, and cause more Social Security to be taxable at the federal level.

2. Withdrawal Order

Many retirees ask which account they should withdraw from first.

The common rule of thumb is to use taxable accounts first, then traditional IRAs, then Roth accounts.

Sometimes that works.

But not always.

A better withdrawal strategy may involve using a mix of accounts to manage tax brackets, reduce future RMDs, and preserve flexibility.

3. Charitable Giving

For retirees who give to charity, tax planning can make charitable gifts more efficient.

Depending on age and account type, qualified charitable distributions from IRAs may be useful. Donor-advised funds, appreciated securities, and bunching charitable deductions may also be worth reviewing.

The right strategy depends on your age, account types, giving goals, and whether you itemize deductions.

4. Estimated Taxes and Withholding

When you are working, taxes are usually withheld from your paycheck.

In retirement, taxes may need to be paid through withholding from pensions, Social Security, IRA distributions, or quarterly estimated tax payments.

Colorado’s Department of Revenue notes that individuals generally need to pay Colorado income tax as they receive income, either through withholding or estimated tax payments.  

This is an easy area to overlook during the first year of retirement.

A good retirement income plan should include not only where your income comes from, but also how taxes will be paid.

5. Medicare IRMAA Planning

Medicare premiums can increase when your income crosses certain thresholds.

This is not technically a tax, but it can feel like one.

Large IRA withdrawals, Roth conversions, capital gains, or business income can potentially increase Medicare premiums in future years.

That does not mean you should always avoid income. Sometimes paying more tax now can still be part of a smart long-term plan.

But you should know the tradeoff before making the decision.

Final Thoughts

Colorado can be a good state for retirees, but retirement taxes still require planning.

Social Security may receive favorable Colorado treatment, but federal taxes can still apply.

IRA and 401(k) withdrawals may qualify for some Colorado subtractions, but they are not automatically tax-free.

Property taxes can be a meaningful retirement expense, especially in Boulder County and other higher-home-value areas.

The senior property tax exemption may help some Colorado homeowners, but you need to qualify and apply.

And perhaps most importantly, your tax picture will likely change throughout retirement.

The year you retire may look very different from the year you start Social Security.

The years before required minimum distributions may create planning opportunities.

The death of a spouse can change tax brackets.

A home sale, Roth conversion, inheritance, or large medical expense can change the plan.

The goal is not to avoid every dollar of tax. The goal is to make thoughtful decisions so taxes do not subtly drive the retirement plan for you.

Thanks for reading.

-Dwight

P.S. Winding Trail Financial Planning is a fee-only financial advisor in Lafayette, Colorado. We help retirees and people within a few years of retirement coordinate investments, taxes, Social Security, Roth conversions, retirement income, and long-term planning. If you would like to talk through how Colorado taxes fit into your retirement plan, you can schedule a time to meet.

FAQ Section

Does Colorado tax Social Security in retirement?

Colorado provides favorable treatment for many retirees receiving Social Security. Taxpayers age 65 or older may subtract the full amount of Social Security benefits included in federal taxable income. Beginning in 2025, taxpayers age 55 to 64 may also qualify for a full subtraction if their income is below certain limits. Federal taxes may still apply. Check out https://tax.colorado.gov/retirees.

Does Colorado tax IRA withdrawals?

Traditional IRA withdrawals are generally taxable at the federal level and may be taxable in Colorado. However, some IRA distributions may qualify for Colorado’s pension and annuity subtraction if the taxpayer meets the age and eligibility requirements. https://tax.colorado.gov/retirees

Does Colorado tax pensions?

Colorado may tax pension income, but qualifying taxpayers age 55 or older may be eligible for a pension and annuity subtraction. The amount depends on age, income type, and other eligibility rules.

Does Colorado have a senior property tax exemption?

Yes. Colorado has a senior property tax exemption for qualifying homeowners. In general, the applicant must be at least 65, must have owned and occupied the home as a primary residence for at least 10 consecutive years, and must apply through the county assessor. https://dpt.colorado.gov/senior-property-tax-exemption

Is Colorado tax-friendly for retirees?

Colorado can be moderately tax-friendly for retirees, especially because of certain subtractions for Social Security, pension, annuity, and IRA income. However, retirees should also consider federal taxes, property taxes, sales taxes, Medicare premiums, and their overall cost of living.

Does Colorado have an estate tax or inheritance tax?

Colorado does not currently require an estate tax filing for estates of individuals who die after December 31, 2004. However, federal estate tax rules may still apply to larger estates, and estate planning remains important for beneficiary designations, probate, trusts, and inherited retirement accounts.