Live in Colorado, work in New Mexico
State income tax on wages · single filer · tax year 2026
New Mexico takes
$1,654
on wages earned there
Colorado takes
$277
after the credit it gives
Both together
$1,932
state tax for the year
Cost of the line
$0
a year, above working at home
What crossing the line costs
credit covers itColorado charges more, so its credit covers everything New Mexico takes. Both states collect; your total does not change. Solid is what you actually pay; the faded part of the Colorado bar is the credit it hands back. State income tax only — federal and payroll tax apply on top, and a city wage tax may too.
Which state taxes you, and what it costs
- Good news for this route. Working in New Mexico costs you nothing extra, because Colorado charges more than New Mexico does and gives you credit for everything New Mexico takes. Your year comes to $1,932, the same as if you never left Colorado for work. What changes is the paperwork, not the money — two states will want a return from you.
- 5,567 jobs is the size of this crossing from Colorado into New Mexico. Smaller than the famous ones, and governed identically. The only practical difference is familiarity — fewer people at your workplace will have done this before.
- Both states tax these wages and the commuter pays no more than they would have at home. New Mexico takes its non-resident share first — $1,654 at the reference salary — and Colorado, whose own liability on the same income is the larger of the two, credits that amount in full and collects the balance. The total is $1,932, identical to what an earner living and working in Colorado would owe. ⚠️ The money is split between two treasuries rather than reduced, which matters at filing time: two state returns, not one.
- This is a smaller corridor by national standards — 5,567 jobs in New Mexico held by Colorado residents — but the rules that govern it are the same rules that govern the largest ones. Corridor size changes how familiar an employer's payroll department is with the paperwork, never the tax treatment.
Where the money goes
A $75,000 salary
- Federal income tax$7,670
- Social Security and Medicare$5,738
- State income tax$2,592
- Yours$59,001
| Federal income tax10.23% | $7,670 |
|---|---|
| Social Security and Medicare7.65% | $5,738 |
| State income tax3.46% | $2,592 |
| Yours78.67% | $59,001 |
Which rung you are on
A $75,000 salary
| This rung starts at | $66,500 |
|---|---|
| Next rung starts at | $121,800 |
| Room before it | $46,800 |
Federal only, measured on gross pay — so the first rung is what the standard deduction covers.
The arithmetic, step by step
| New Mexico takes, on wages earned there | $1,654 |
|---|---|
| Colorado charges its residents | $1,932 |
| Less the credit Colorado gives | $1,654 |
| Total state tax | $1,932 |
| If you also worked in Colorado | $1,932 |
| Difference | $0 |
On a reference salary of $60,000 a year, single filer. Both states run progressive schedules, so the figures do not simply scale — use the tool above for your own salary.
What this page does not cover
- City wage taxes are not in these numbers. A few places charge them, and where they do the money is real. If your job in New Mexico is inside a city that taxes workers, add that on top. Where it is not, the state figures above are the whole of it for Colorado residents.
- These numbers assume the job in New Mexico is your only income, and that you actually go there to work. Both matter. If you earn money in more than one state, the credit Colorado gives is worked out as a share rather than the simple cap used here. And if you work from home some days, some states have rules that treat those days as worked at the office anyway.
- The dollars rest on one assumed salary of sixty thousand. Double your pay and they do not simply double, because both states charge more on higher slices of income. What tends to stay put is which side of the Colorado and New Mexico comparison you are on.
- These figures cover the STATE layer only. City and municipal wage taxes sit on top of them and are not included: a commuter into Philadelphia pays its wage tax on top of anything here, and Ohio's municipalities run their own credit system, which this site models in its own families. New York City, by contrast, taxes only its residents, so a commuter into it adds nothing at the city level. Whether New Mexico or Colorado carries a local layer is a separate question from the state arithmetic above.
- The arithmetic assumes all wages are earned in New Mexico and that there is no other income. That matters for the credit: where income comes from several states, Colorado limits the credit to the share of its own tax attributable to the New Mexico portion, computed as a ratio rather than the straightforward cap used above. It also assumes days are worked in New Mexico rather than remotely — several states tax a non-resident's remote days as though they were worked at the employer's location, which reverses the usual expectation and is handled on this site's reciprocity pages.
- Dollar amounts are computed at a stated reference salary of sixty thousand rather than a corridor wage average, which no published source provides per state pair. Because both states' liabilities and the credit between them are functions of the same income, the direction of the Colorado to New Mexico comparison holds at other salaries even though the amounts do not — with one qualification worth stating, that a progressive schedule can change the SIZE of the gap at higher incomes, and in New Mexico's case a bracket crossed on one side and not the other is exactly where that happens.
Questions people ask
Do I pay state tax twice, to Colorado and New Mexico?
Both states tax the same wages, and then one of them backs off. New Mexico taxes what you earn inside it. Colorado taxes you on everything, then subtracts what New Mexico already took, up to the size of its own bill. You end up paying the larger of the two, which is $1,932 a year on this route.
Does working in New Mexico cost me anything extra?
It costs you nothing in tax. $1,932 is what you owe whether you work in New Mexico or at home in Colorado. The only real cost of the crossing is the extra return.
Do I have to file tax returns in both Colorado and New Mexico?
Usually yes, and it catches people out. Colorado wants a return because you live there. New Mexico usually wants one too, because you earned money inside it — even in the cases where you end up owing it nothing. Filing in a state and paying it are separate things, and the return is often what proves you do not owe.
What if I work from home in Colorado some days instead of going to New Mexico?
Normally, days worked at home in Colorado belong to Colorado, and only the days you spend in New Mexico are taxed there. That is the ordinary rule. The exception is real though: some states count your remote days as worked at the employer's location anyway. That flips the answer completely, so check New Mexico's rule rather than assuming.
How is liability allocated between residence and work state on the same wages?
Both jurisdictions assert a claim on the same wages — New Mexico on a source basis, Colorado on residence. The residence state grants a credit for tax paid to the source state, limited to the residence state's own liability on that income. Net combined liability therefore equals the greater of the two liabilities rather than their sum, $1,932 at the reference salary, and the split between the two treasuries is the only thing the credit changes.
Why is the marginal state-tax cost of this crossing zero?
Marginal cost is zero because the binding liability is the residence state's. Colorado's own charge on this income equals or exceeds New Mexico's, so the resident credit absorbs the source-state tax entirely and combined liability equals residence-only liability, $1,932. ⚠️ Zero marginal tax is not zero obligation: a non-resident return may still be required in New Mexico.
What filing obligations arise in each state on this corridor?
Generally two. Colorado requires a resident return reporting all income; New Mexico requires a non-resident return reporting the income sourced to it, which is also the mechanism by which the resident credit is substantiated. ⚠️ A filing obligation is distinct from a liability: a reciprocity exemption or a zero net position removes tax without necessarily removing the return, and the non-resident return is frequently what establishes the credit claimed on the resident one.
How do remote working days affect sourcing between these two states?
Ordinarily wages are sourced to where the services are performed, so days worked remotely from Colorado fall outside New Mexico's jurisdiction and the source-state apportionment shrinks accordingly. ⛔ The exception is the "convenience of the employer" rule, which several states apply: a non-resident's remote days are sourced to the employer's location unless the remote work is required by the employer rather than chosen by the employee. The figures on this page model in-person attendance in New Mexico throughout.