Quick answer: No, New Mexico co-personal representatives don't automatically each collect their own full compensation with a combined total that grows by headcount. NMSA 1978 § 45-3-719 contains no separate provision for multiple personal representatives — the same "reasonable compensation" standard governs, and the value of each co-personal representative's actual services determines what they're individually owed. Estimate the underlying reasonable range first with the New Mexico executor fee calculator.
No statutory split, because there's no statutory schedule to split
Even the old, repealed schedule wouldn't change this today
New Mexico's pre-1995 predecessor did use a percentage-driven approach, but it was fully repealed and reenacted with the current bare standard. Whatever that older law might have said about dividing a formula-based fee among multiple fiduciaries has no bearing on the current text, which applies the same reasonableness question regardless of how many personal representatives are serving.
Self-determined fee review likely works the same way, per person
Each co-personal representative's work is assessed on its own
Because reasonableness under § 45-3-719 turns on the value of services actually rendered, a court dividing compensation among co-personal representatives (in a contested case) would naturally look at what each person individually contributed — not an automatic even split, and not a separate full fee multiplied by however many people are serving.
Real coordination costs, same as anywhere
Co-personal representatives in New Mexico share fiduciary duties, and disagreements about pace, priorities, or how to divide tasks can slow administration or invite disputes — a practical consideration independent of how compensation eventually gets assessed.
Worked example
Two siblings serve as co-personal representatives of a New Mexico estate. One handles the bulk of the administrative work; the other contributes occasionally. A sole personal representative doing all the work might reasonably bill 40 hours at $40/hr, or $1,600.
| Co-personal representative | Hours | Rate | Compensation |
|---|---|---|---|
| Sibling A (primary administrator) | 32 hrs | $40/hr | $1,280 |
| Sibling B (occasional support) | 8 hrs | $40/hr | $320 |
Each figure reflects that person's own reasonable compensation for their own time, combining to roughly the same total a sole personal representative's full administration would have reasonably cost.
A local probate attorney can review your estate — many offer a free consultation.