Payroll in Montana: prices, state taxes and deadlines, town by town
What businesses in Montana pay for payroll, what the state's unemployment tax and minimum wage add, when a final paycheck is legally due, and what the IRS charges for a late deposit - verified sources, per-town guides.
Two free marketplace paths: one form brings back multiple vetted payroll providers who know they are competing for the account.
Payroll services quoted across Montana in 2026 run $20-$150 a month in base fees plus $4-$15 per employee per month, putting a ten-person payroll at roughly $70-$250 a month all in.
Montana assigns new employers a state unemployment tax rate of 1.00%-1.30% depending on industry (2.00% if unclassified) on wages up to $47,300 per employee per year - the state-set portion of every payroll run in the state, before a single provider fee is counted.
Montana requires a terminated employee's final paycheck Immediately upon separation when the employee is separated for cause or laid off — UNLESS - a deadline set by state law rather than by your pay cycle, and the most common way a small payroll turns into a wage claim.
Every payroll provider sells the same three promises - run the checks, file the taxes, keep you compliant - and prices them differently enough that identical Montana businesses pay double what their neighbors pay. The comparison that matters is not the base fee: it is the all-in monthly total at your headcount, the per-state filing surcharge if anyone works remotely, and what the contract says happens at renewal.
Get competing payroll quotes - one form, several providers
Two free marketplace paths: one form brings back multiple vetted payroll providers who know they are competing for the account. Competing quotes are the only reliable way to see what your headcount actually prices at.
External links go to the marketplaces' own sites and forms. This site may earn a referral fee at no cost to you - it never changes the data above, and no individual payroll provider pays to appear in our research.
What Montana adds to every payroll
| Question | Montana answer |
|---|---|
| State unemployment tax - new employer rate | 1.00%-1.30% depending on industry (2.00% if unclassified), plus 0.18% Administrative Fund Tax (range 0.00%-6.12% (Schedule 1), excluding the separate 0.18% Administrative Fund Tax) |
| Taxable wage base per employee | $47,300 - Primary source: MT DLI Contributions Bureau 'UI Contribution Taxable Wage Base & Rates for 2026' |
| State minimum wage | $10.85 - $10.85/hr current rate (Montana DLI) |
| State income tax withholding | graduated, roughly 4.7%–5.65% |
| Final paycheck - employee is fired | Immediately upon separation when the employee is separated for cause or laid off — UNLESS the employer has a written personnel policy governing the employment that extends payment to the next regular payday for the pay |
| Final paycheck - employee quits | On the next regular payday for the pay period during which the employee separated, or 15 days from the date of separation, whichever occurs first |
| Penalty for a late final paycheck | A penalty assessed against and paid by the employer to the employee in an amount not to exceed 110% of the wages due and unpaid |
| Unused vacation / PTO payout | policy_governs |
| New-hire reporting deadline | Within 20 days of hire date |
| Penalty for late new-hire reporting | No monetary penalty specified |
Montana assigns a brand-new employer's rate by NAICS-style industry group rather than one flat rate, and layers a separate 0.18% Administrative Fund Tax on every employer - so even an employer at a 0.00% UI rate still writes a check.
This page is independent research, not legal, tax or accounting advice. Federal deposit rules and state wage, unemployment and final-paycheck laws change - verify current requirements with the IRS and your state labor and revenue agencies, or with a licensed CPA or attorney, before acting.
What payroll services cost in 2026
| What you are buying | 2026 published range | The number that actually matters |
|---|---|---|
| Monthly base fee | $20-$150/month | Meaningless alone - always price it with your headcount attached |
| Per employee, per month | $4-$15/employee/month | At 10 employees this is most of the bill: $70-$250/month all in |
| Fully outsourced processing | $30-$100/person/month | Quoted per person rather than base plus fee - bundles compliance work |
| Year-end W-2 and 1099 filing | $4-$8/form | Included at some tiers, billed at others - ask before January |
| Additional state filings (remote staff) | $6-$20/state/month | One remote hire in a new state can change the plan you need |
| Off-cycle or bonus runs | $5-$50 each | Bonus season is when this line shows up on the invoice |
| Setup / implementation | $0-$200 | Commonly waived at small-business tiers - ask, it is negotiable |
| A late federal deposit | 2%-15% of the deposit | The reason the monthly fee is the second-most important number (IRS IRC 6656) |
The penalty schedule, in the IRS's own numbers
| What happened | Federal penalty | Applied to |
|---|---|---|
| Deposit up to 5 days late | 2% | The deposit amount |
| Deposit 5-15 days late | 5% | The deposit amount |
| Deposit more than 15 days late | 10% | The deposit amount |
| Still unpaid 10 days after an IRS notice | 15% | The deposit amount |
| Form 941 filed late | about 5% per month, capped near 25% | The unpaid tax |
| Withheld trust-fund taxes never paid over | Trust Fund Recovery Penalty - 100% of the trust-fund amount | A responsible person, personally |
Read that last row twice. Income tax and the employee share of FICA are withheld in trust, which is why the penalty for never paying them over can be assessed personally against an owner or officer of a Montana business under IRC 6672 - the corporation does not stand in the way. It is the strongest argument for hiring a provider, and the strongest argument for verifying that the provider actually files.
One detail in the IRS's favour: the percentages do not stack. A deposit more than 15 calendar days late is charged at 10%, not at 10% plus the earlier 2% and 5% tiers. That is the only piece of good news on this page.
The sentence that decides the whole question
The IRS puts it in two sentences on its outsourcing page: "The employer is ultimately responsible for the deposit and payment of federal tax liabilities," and if the third party fails to make those payments, "the employer is liable for all taxes, penalties and interest due." In other words, an employer who outsources payroll duties remains responsible for depositing and reporting employment taxes. Every payroll provider is selling reliability against that fact, and none of them can sell an exemption from it. The practical consequences for a Montana employer are concrete: keep the IRS address of record as your own so notices reach you, ask for filing confirmations rather than assuming, and treat a provider's penalty guarantee as a contract term to read - not as a transfer of the legal duty.
Why only these two paths
A late deposit costs 2% to 15% of the deposit; a full year of payroll processing for a small Montana employer costs less than one such penalty on a modest payroll. Price the service second and the failure mode first.
Hard bar, verifiable by anyone: free to the buyer, and structurally multi-vendor - one request produces several competing quotes, which is the check against over-quoting that no single sales relationship provides. Marketplaces that charge buyers or route to a single seller are not listed, and any listed path that drops below the bar gets removed. We list no individual payroll brand as a recommendation: this site does not rank providers it cannot audit filings for.
| Path | What it is | Why it made the bar |
|---|---|---|
| BuyerZone | B2B quote marketplace covering payroll services and other business categories | One form, multiple vetted providers respond with competing quotes - free to buyers |
| 360Connect | B2B quote marketplace with local service-area matching for payroll solutions | Matches up to five suppliers per request, 100% free to buyers |
Get competing payroll quotes - one form, several providers
Two free marketplace paths: one form brings back multiple vetted payroll providers who know they are competing for the account. Competing quotes are the only reliable way to see what your headcount actually prices at.
External links go to the marketplaces' own sites and forms. This site may earn a referral fee at no cost to you - it never changes the data above, and no individual payroll provider pays to appear in our research.
Common questions
What hidden fees do payroll companies charge?
The recurring surprises are year-end W-2 and 1099 filing at roughly 4-8 dollars per form, additional state tax filings at 6-20 dollars per state per month for remote employees, off-cycle or bonus runs at 5-50 dollars each, setup or implementation fees, charges for mailed paper checks, and per-employee fees that continue for terminated staff. Ask for the full fee schedule in writing, not the pricing page.
Can I do payroll myself instead?
Yes, and for a single-state business with a handful of salaried employees, software plus discipline is genuinely cheaper. The variables that change the answer are multi-state employees, hourly overtime, tipped wages, garnishments and turnover - each multiplies the number of deadlines. For scale, an in-house payroll specialist averages about $64,865 dollars a year in 2026 wage data, so the real comparison for most small employers is software plus your own hours versus a service.
If my payroll provider files late, who pays the IRS penalty?
The employer is responsible to the IRS regardless. The IRS states that outsourcing payroll duties does not relieve an employer of the responsibility to deposit and report employment taxes - the notice follows your EIN. Many providers offer a contractual guarantee to cover penalties they cause, but that is a private contract, not a change in tax liability. Get the guarantee, its limits and its claim process in writing.
How much does payroll cost per employee per month?
Per-employee fees cluster at $4-$15 dollars per month on top of the base fee for standard payroll software and services. Fully outsourced processing and PEO-style arrangements are quoted differently - commonly $30-$100 dollars per person per month or a percentage of gross payroll - and bundle benefits administration and compliance work that standard payroll does not include.
How fast do I have to report a new hire?
The federal baseline is 20 days from the date of hire, reported to your state's new-hire directory, and a number of states set shorter deadlines. Rehires generally count, and some states also require reporting independent contractors. Confirm which filing your payroll provider makes for you - new-hire reporting is commonly included, but not universally.
When does a final paycheck have to be paid?
That is set by state law, and it differs for employees who are fired versus employees who quit. Several states require immediate payment on termination; others allow the next regular payday; a few add a penalty that accrues per day until the check is delivered. Unused vacation payout is likewise state-specific. The rule for Montana is on this site's final-paycheck page with its source.
Get competing payroll quotes - one form, several providers
Two free marketplace paths: one form brings back multiple vetted payroll providers who know they are competing for the account. Competing quotes are the only reliable way to see what your headcount actually prices at.
External links go to the marketplaces' own sites and forms. This site may earn a referral fee at no cost to you - it never changes the data above, and no individual payroll provider pays to appear in our research.
Prices by city
Alberton · Anaconda-Deer Lodge County · Bainville · Baker · Bearcreek · Belgrade · Belt · Big Sandy · Big Timber · Billings · Boulder · Bozeman · Bridger · Broadus · Broadview · Butte · Cascade · Chester · Chinook · Choteau · Circle · Clyde Park · Colstrip · Columbia Falls · Columbus · Conrad · Culbertson · Cut Bank · Darby · Deer Lodge · Denton · Dillon · Dodson · Drummond · Dutton · East Helena · Ekalaka · Ennis · Eureka · Fairfield · Fairview · Flaxville · Forsyth · Fort Benton · Fort Peck · Froid · Fromberg · Geraldine · Glasgow · Glendive · Grass Range · Great Falls · Hamilton · Hardin · Harlem · Harlowton · Havre · Helena · Hingham · Hobson · Hot Springs · Hysham · Ismay · Joliet · Jordan · Judith Gap · Kalispell · Kevin · Laurel · Lavina · Lewistown · Libby · Lima · Livingston · Lodge Grass · Malta · Manhattan · Medicine Lake · Melstone · Miles City · Missoula · Moore · Nashua · Neihart · Opheim · Outlook · Philipsburg · Pinesdale · Plains · Plentywood · Plevna · Polson · Poplar · Red Lodge · Rexford · Richey · Ronan · Roundup · Ryegate · Saco · Scobey · Shelby · Sheridan · Sidney · St. Ignatius · Stanford · Stevensville · Sunburst · Superior · Terry · Thompson Falls · Three Forks · Townsend · Troy · Twin Bridges · Valier · Virginia City · Walkerville · West Yellowstone · Westby · White Sulphur Springs · Whitefish · Whitehall · Wibaux · Winifred · Winnett · Wolf Point