Is it cheaper to form an LLC in Montana than South Dakota?

Montana's filing fee is lower ($35 vs $150), but that's not the full picture: operating in South Dakota means also registering as a foreign LLC there ($750) and paying a Montana registered agent. Realistic first-year cost is roughly $935 for the Montana route versus $150 for forming in South Dakota.

Can I form my South Dakota business in Montana?

Yes. Any South Dakota business can form its LLC in Montana. But if the business operates in South Dakota, it must also register there as a foreign LLC ($750 filing fee) and maintain a registered agent in Montana, so you take on two states' fees and filings instead of one.

Does Montana have better asset protection than South Dakota?

Not meaningfully. Both states provide charging-order protection for LLC members, and neither offers a decisive asset-protection edge for a typical small business. Sound insurance and clean separation of business and personal finances matter more in practice.

State Comparison

South Dakota LLC vs Montana LLC (2026)

Compare South Dakota LLC vs Montana LLC on filing fees, taxes, privacy laws, and annual costs. Find out which state is actually better for your business.

By Edmond Hui · Last updated: August 13, 2026

For most businesses, forming an LLC in South Dakota beats Montana. South Dakota runs $205 in year one and $55/yr after; Montana runs $35 and $0/yr. See the full breakdown below.

Verdict: South Dakota wins for most businesses

For most South Dakota-based businesses, forming locally in South Dakota is the smarter choice. You avoid paying fees in two states and managing compliance in both. Montana only makes sense if your business genuinely operates there, and even then the total costs deserve a hard look.

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Factor	South Dakota	Montana
Filing Fee	$150	$35
Processing Time	Not published by the state	Not published by the state
Annual Report Fee	$55	$20
Annual Report Due	Anniversary month	April 15
State Income Tax	No	Yes
Anonymous LLC	No	No
Publication Requirement	No	No
Foreign LLC Cost (if forming out-of-state)	N/A, you're in your home state	$750 + registered agent ~$150/yr

Full fee breakdown for either state: South Dakota LLC cost and Montana LLC cost.

Business Climate: South Dakota vs Montana

Factor	South Dakota	Montana
5-year business survival rate	52.7% (#19 of 51)	53% (#16 of 51)
Business application growth (2026 YTD (Jan to Jul) vs 2025 YTD (same months))	+15.4% YoY (#47 of 51 by volume)	+13.4% YoY (#40 of 51 by volume)

Sources: U.S. Bureau of Labor Statistics, Business Employment Dynamics · U.S. Census Bureau, Business Formation Statistics (BFS)

See the full 50-state survival ranking.

Compare LLC Costs: South Dakota vs Montana

State A

State B

South Dakota

Formation fee$150

Annual report fee$55

State entity taxNone

Report dueAnniversary month

Processing timeNot published by the state

Late penalty$55

Montana

✓ Cheaper Upfront✓ Cheaper Long-Term

Formation fee$35

Annual report fee$0

State entity taxNone

Report dueApril 15

Processing timeNot published by the state

Late penalty$35

Total Cost

South Dakota

Montana

1 Year

$205

$35

3 Years

$315

$35

5 Years

$425

$35

Will you operate outside your home state?

Costs include every mandatory state charge: the filing fee, the report fee (annualised where a state files biennially), any state entity-level tax shown in its own row above, a one-time publication cost where a state requires publication, and any one-time registration charge a state requires before the LLC may trade. Annualising makes the 1, 3 and 5 year rows a cost of ownership rather than a payment schedule: a biennial state charges its whole report fee in the years it falls due and nothing in between. Entity-level taxes that only apply after a corporate election, or above an owner or income threshold, are excluded and flagged on the state's own cost page. New York's publication cost is carried at a $250 floor, roughly $200 of newspaper cost in a low-cost county plus the $50 Certificate of Publication fee. No county-clerk-designated New York City newspaper publishes a rate card, so the four-figure NYC estimates in wide circulation cannot be traced to a primary source and are not asserted here; budget for materially more than the floor if you file in a NYC county. Montana's annual report is free when filed by April 15 and $35 after, a waiver the Secretary of State applies at its discretion. Every fee was verified against the state's own fee schedule, statute, or revenue authority on 29 July 2026. Excludes registered agent and legal fees. For informational purposes only, not legal or tax advice.

Filing Fees & Formation Costs

South Dakota charges $150 to form an LLC, while Montana charges $35. Montana is $115 cheaper upfront. The cost that usually gets overlooked: if you form in Montana but operate in South Dakota, you must also register as a foreign LLC in South Dakota (a $750 filing) and maintain a registered agent in Montana (typically around $150 per year). That puts the realistic first-year cost of the Montana route at roughly $935, versus $150 for simply forming in South Dakota. Speed isn't a basis for choosing between them: neither South Dakota nor Montana publishes a standard processing time, so any figure comparing the two is guesswork.

Taxes: South Dakota vs Montana

South Dakota has no personal income tax, while Montana taxes individual income. Since pass-through LLC profits are taxed where you live and operate, a South Dakota-based owner keeps South Dakota's no-income-tax benefit either way. Forming in Montana adds no tax advantage. Montana levies a two-bracket individual income tax; per HB 337 (2025) the top rate drops from 5.9% to 5.65% effective January 1, 2026, with the 4.7% lower rate applying up to $47,500 single/$95,000 joint (Montana Department of Revenue). No franchise or privilege tax on LLCs; the Secretary of State currently waives the annual report fee for reports filed by April 15 ($35 if filed late).

Privacy & Asset Protection

Neither South Dakota nor Montana offers anonymous LLC formation: both states require owner or manager information on public filings. MCA 35-8-208 requires the LLC's annual report to state the names and business mailing addresses of the managers (if manager-managed) or of the members (if member-managed), and these reports are public. Business owners who prioritize privacy typically form a holding company in a state like Wyoming or New Mexico instead. Both states provide charging-order protection for LLC members, and for most small businesses the practical difference in asset protection between the two is minimal.

Annual Maintenance Costs

South Dakota LLCs file an annual report ($55, due in the anniversary month), and Montana LLCs file an annual report ($20, due April 15). If you form in Montana while operating in South Dakota, you maintain filings in both states, Montana's report plus South Dakota's equivalent for your foreign registration, and pay a Montana registered agent roughly $150 per year. That brings ongoing costs of the Montana route to roughly $225 per year, versus about $55 to keep a domestic South Dakota LLC in good standing. One more recurring cost to budget for: No franchise or privilege tax on LLCs; the Secretary of State currently waives the annual report fee for reports filed by April 15 ($35 if filed late).

When Montana Actually Makes Sense

Forming in Montana makes sense in a few specific situations: your business genuinely operates in Montana, with a real office, employees, or property there, or you're relocating to Montana in the near future and accept taking on Montana's personal income tax, which South Dakota doesn't levy. For a typical small business based in South Dakota, none of these usually apply. Registering a Montana LLC to do business back home means $750 in South Dakota foreign-registration fees, on top of Montana's $35 formation fee, while South Dakota's own annual report runs $55 a year and is due in the anniversary month. When in doubt, form where you actually do business.

Frequently Asked Questions

: Montana's filing fee is lower ($35 vs $150), but that's not the full picture: operating in South Dakota means also registering as a foreign LLC there ($750) and paying a Montana registered agent. Realistic first-year cost is roughly $935 for the Montana route versus $150 for forming in South Dakota.
: Yes. Any South Dakota business can form its LLC in Montana. But if the business operates in South Dakota, it must also register there as a foreign LLC ($750 filing fee) and maintain a registered agent in Montana, so you take on two states' fees and filings instead of one.
: Not meaningfully. Both states provide charging-order protection for LLC members, and neither offers a decisive asset-protection edge for a typical small business. Sound insurance and clean separation of business and personal finances matter more in practice.
: South Dakota, for most. Forming where you operate keeps costs and compliance simple. Montana is worth considering only if you actually do business there or have investor requirements that point there.
: Speed isn't a basis for choosing between them: neither South Dakota nor Montana publishes a standard processing time, so any figure comparing the two is guesswork. Only 19 of the 50 states publish anything about non-expedited turnaround at all. Whichever you pick, remember that forming in Montana while operating in South Dakota means you're not fully set up until the South Dakota foreign registration is also processed, so the out-of-state route is rarely the faster path end to end. If your timing is genuinely fixed, buy the state's expedite tier rather than relying on a standard turnaround.

Comparison chart of forming an LLC in South Dakota versus Montana, contrasting filing fees, annual report cost and ongoing obligations across 8 factors. On balance this guide favours South Dakota. — South Dakota and Montana side by side on the factors that decide where to form. Source: MyStateLLC 50-state cost dataset, verified against each Secretary of State's published fee schedule, July 2026.

More State Comparisons

South Dakota vs Nebraska →South Dakota vs Nevada →South Dakota vs New Hampshire →South Dakota vs Delaware →Montana vs Delaware →

South Dakota LLC Guide →Montana LLC Guide →

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