Live in Delaware, Work in Colorado: Which State Taxes Your Paycheck?
Answer
Both states tax the same wages, and a credit undoes the overlap. Colorado withholds as your work state and you file a Colorado nonresident return; Delaware taxes residents on all income, so you also file at home and claim the credit for tax paid to Colorado. File Colorado first.
Last verified
Without an agreement between Delaware and Colorado, the overlap is handled after the fact rather than prevented. That is why the filing order matters: the Colorado figure is an input to the Delaware return, so completing Delaware first means doing it twice.
A Delaware resident taxed by another state on the same income claims the credit for taxes paid to other states on Schedule I (Form PIT-RES). The credit is capped at the Delaware tax on that income, so it removes the double tax but never refunds the excess when the other state charges more.
Colorado also has a layer below the state one, and it is the layer that survives every agreement: A few Colorado cities levy an occupational privilege tax — a flat monthly head charge on anyone working in the city, not a percentage of income. It is not an income tax and no credit offsets it.
What you file
- 1Nonresident return · ColoradoForm DR 0104 with Schedule DR 0104PN
File the Colorado nonresident return FIRST — you need the Colorado tax figure before you can complete Delaware.
- 2Resident return · DelawareSchedule I (Form PIT-RES)
File a Delaware resident return reporting all income, then claim the credit for tax paid to Colorado. The credit is capped at what Delaware would have charged on that same income, so if Colorado taxes it at a higher rate the difference is not refunded.
The two states, side by side
| Delaware | Colorado | |
|---|---|---|
| Taxes wages | Yes — graduated | Yes — flat |
| Reciprocity partners | None | None |
| Convenience rule | Yes — general rule | No |
| Nonresident return | Form PIT-NON | Form DR 0104 with Schedule DR 0104PN |
| Credit for other-state tax | Schedule I (Form PIT-RES) | Form DR 0104CR |
| Nonresident safe harbour | None published | None published |
| Local income tax | Yes | Yes |
| Revenue department | Delaware Division of Revenue | Colorado Department of Revenue — Taxation Division |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in Colorado and working in Delaware gives:Both states — credit offsets the double tax.
Same two states, different situation
The withholding answer turns on how you are paid and where the work happens, not only on which two states are involved.
- Remote worker: Delaware → ColoradoHome state only
- 1099 contractor: Delaware → ColoradoHome state, plus the client state if you work there
- Moved mid-year: Delaware → ColoradoTwo part-year returns
Other Delaware pairs
Questions people actually ask
I live in Delaware and work in Colorado. Which state takes the tax out of my paycheck?
Both states tax the same wages, and a credit undoes the overlap. Colorado withholds as your work state and you file a Colorado nonresident return; Delaware taxes residents on all income, so you also file at home and claim the credit for tax paid to Colorado. File Colorado first.
Which state should my employer be withholding for?
Colorado. The wages are sourced to Colorado, so Colorado withholding is correct and there is no Delaware withholding to set up.
Will I end up paying tax twice on the same income?
Not twice over, but you will pay the higher of the two rates. Delaware gives residents a credit for tax paid to Colorado on the same income, claimed on Schedule I (Form PIT-RES). The credit is capped at the Delaware tax on that income, so if Colorado taxes it more heavily the excess is not refunded by either state.
How current is this?
The Delaware and Colorado rules on this page were last checked against Delaware Division of Revenue and Colorado Department of Revenue — Taxation Division on 2026-08-07. We re-check the full grid every December after state legislative sessions close, and re-check the convenience-of-the-employer states quarterly because that is where the rules move fastest.
Sources
Every fact above comes from the revenue department that publishes the rule. We do not cite secondary summaries, and we do not restate a figure we could not find at source.
- Delaware Division of Revenue — individual income taxaccessed 2026-08-07
- Colorado Department of Revenue — Taxation Division — individual income taxaccessed 2026-08-07