Is it cheaper to form an LLC in Maine or South Dakota?

South Dakota is cheaper at formation ($150) than Maine ($175). Ongoing costs are also different: $155 vs $185 per year. Total over three years: $615 vs $730.

Can I form an LLC in Maine if I live in South Dakota?

Yes, but your South Dakota business will almost certainly need to register as a foreign LLC in South Dakota too, which means paying South Dakota's foreign registration fee and any ongoing South Dakota obligations on top of the Maine ones. The "form elsewhere to save" math usually doesn't work for operating businesses; it only works when you have no physical operations tied to any specific state.

How long does it take to form an LLC in Maine vs South Dakota?

Maine online turnaround varies; South Dakota online: 1 business day. Maine offers paid expedite from $50. South Dakota offers paid expedite from $50.

Which state has lower taxes for an LLC, Maine or South Dakota?

Maine: state income tax applies to member-level pass-through income, no entity-level franchise or LLC tax. South Dakota: no state income tax, no entity-level franchise or LLC tax.

Do both states require a registered agent?

Yes. Every US state (and DC) requires every LLC to maintain a registered agent with a physical street address in the state. Maine and South Dakota both have this requirement. You can serve as your own agent if you live in the state; most out-of-state filers use a commercial agent for $50 to $125 per year.

Do I need a written operating agreement in Maine or South Dakota?

Maine requires LLCs to adopt a written operating agreement by statute. South Dakota treats it as strongly recommended rather than required. In practice, any LLC with more than one member, or any LLC planning to preserve its liability shield, should have a written agreement regardless of which state it's formed in.

Which state should I pick if I run an online business from home?

Form in the state you actually live in. Your home state's Department of Revenue treats your residence as nexus regardless of where the LLC is filed, which means you owe state income tax there anyway. Forming in Maine or South Dakota to escape your home state's tax doesn't work; it adds paperwork. The non-resident filings make sense when you genuinely operate nowhere in particular: international founders, purely passive holding entities, or real-estate LLCs owning property in other states.

Maine vs South Dakota LLC comparison

Maine charges $175 to form an LLC; South Dakota charges $150. Day-one sticker price is only part of the story, since most of the real cost comes from the annual obligations that stack up each year you keep the LLC open.

Over a rolling three-year window, South Dakota runs about $115 less in total state fees than Maine. Whether that gap matters depends on whether you actually operate in one of these states or are weighing a non-resident filing.

On speed, South Dakota typically clears standard online filings faster than Maine. Both states offer expedited tiers at an additional cost for filers on tight timelines.

For most small operators the choice is not really between these two states at all. It is between forming where the business actually operates and trying to route through a non-resident filing. The data below shows what each option actually costs.

Formation filing fee

Maine $175

South Dakota $150

South Dakota saves $25

Year 1 total estimate

Maine $360

South Dakota $305

South Dakota saves $55

Ongoing per year

Maine $185

South Dakota $155

South Dakota saves $30

3-year total

Maine $730

South Dakota $615

South Dakota saves $115

Key differences at a glance

South Dakota costs $25 less to form ($150 vs $175).
South Dakota is $30 per year cheaper to maintain ($155 vs $185).
South Dakota has no state individual income tax; pass-through LLC income flows to members without a state layer. The other state does tax at the member level.
Maine requires LLCs to adopt a written operating agreement by statute. The other state treats it as recommended rather than required.

Where each state fits

For most filers, forming in the state you actually operate from is the right call. The side-by-side below shows where the two states meaningfully diverge.

What each state offers that the other does not

Only South Dakota

Online filing
No state income tax
Operating agreement not statutorily required

Both states

Paid expedited tier
No entity-level franchise or LLC tax
No publication requirement

Three-year cost, side by side

Rough estimate of the state-facing cost to form and keep an LLC through three years. Both totals include a $100 per year registered-agent estimate.

Maine South Dakota

Year 1

$360

$305

Year 2

$545

$460

Year 3

$730

$615

Running total includes the one-time filing fee and annual ongoing costs (report fee or franchise tax plus a $100/year registered agent estimate).

What it costs under your specific situation

The table below runs the same LLC through four common scenarios. "Non-resident" rows assume a typical home-state foreign LLC registration adds about $200 per year of stacked cost; the real number depends on which state you live in and ranges from $50 to over $800 depending on jurisdiction.

Scenario	Year 1	Each year after	3-year total
You live in Maine, business operates there No foreign LLC registration needed. You pay Maine fees only.	$360	$185	$730
You live in South Dakota, business operates there No foreign LLC registration needed. You pay South Dakota fees only.	$305	$155	$615
Non-resident forming in Maine with operations elsewhere You pay Maine's fees plus a typical home-state foreign LLC registration of about $200 per year.	$560	$385	$1,330
Non-resident forming in South Dakota with operations elsewhere You pay South Dakota's fees plus a typical home-state foreign LLC registration of about $200 per year.	$505	$355	$1,215

Maine vs South Dakota: full comparison

Dimension	Maine	South Dakota
Online filing Can you file the formation document online?	No	Yes
Online approval time Standard, non-expedited	Varies	1 business day
Expedited option Paid fast-track filing	$50	$50
Annual report Required in addition to tax	Required, $85	Required, $55
State-imposed annual tax Franchise, privilege, or LLC tax minimum	None	None
State income tax On pass-through LLC income at member level	Yes	No
Publication requirement Newspaper publication after formation	No	No
Operating agreement Required by state statute	Required by statute	Recommended, not required
Foreign LLC fee Cost to register as a foreign LLC in this state	$250	$750
State sales tax General statewide rate	5.5%	4.2%

Taxes in Maine and South Dakota

How each state handles entity-level tax on LLCs. Pass-through classification means member-level income tax also applies at each member's residence state.

Maine tax

No entity-level franchise tax on LLCs. State income tax applies to member-level pass-through income. Corporate rate 8.9%.

South Dakota tax

No entity-level franchise tax on LLCs. No state income tax.

Ongoing compliance

The recurring filings each state requires after formation.

Maine

Annual report $85, due 06/01 each year. Registered agent required in Maine.

South Dakota

Annual report $55, due on your anniversary month. Registered agent required in South Dakota.

Formation process, side by side

What actually happens from the moment you start filing to the moment you're in good standing. Use this as a checklist.

Maine

Check business-name availability on the Maine entity search.
Appoint a registered agent with a physical Maine street address.
File Certificate of Formation (Form MLLC-6) for $175.
Wait for approval. Paper-only processing. Paid expedite from $50.
Adopt a written operating agreement (statutorily required in Maine).
Apply for a federal EIN (free from the IRS).
Open a business bank account to separate personal and business finances.
File your first annual report and pay $85 when it comes due.

South Dakota

Check business-name availability on the South Dakota entity search.
Appoint a registered agent with a physical South Dakota street address.
File Articles of Organization (Domestic Limited Liability Company) for $150.
Wait for approval. Online typically 1 business days. Paid expedite from $50.
Adopt an operating agreement (recommended, not required by South Dakota statute).
Apply for a federal EIN (free from the IRS).
Open a business bank account to separate personal and business finances.
File your first annual report and pay $55 when it comes due.

Before you pick either state

A few things that apply no matter which state you choose. These trip up enough first-time filers that they're worth stating explicitly.

Registered agent is non-negotiable. Both Maine and South Dakota (and every other US state) require every LLC to designate a registered agent with a physical street address in the state of formation. You can serve as your own agent if you live in the state; otherwise a commercial agent runs $50 to $125 per year. Using your own home address makes it part of the public record.

Forming elsewhere does not escape your home state's tax. If you live and operate a business from your home state, forming the LLC in Maine or South Dakota does not avoid your home state's income tax. The moment you transact business at home, your home state requires a foreign LLC registration, and state tax liability follows your residence regardless of where the entity sits on paper.

EIN applications are free. The IRS issues Employer Identification Numbers directly at no cost. Any service charging you to "get your EIN" is reselling a free form submission. Single-member LLCs with no employees technically don't need one for federal tax, but nearly every bank requires an EIN to open a business account.

Operating agreement matters more than the state you pick. A well-drafted operating agreement governs member ownership, management, profit splits, buy-sell terms, and dissolution. Without one, your LLC runs on the state's default rules, which are rarely what you want. California, Maine, Missouri, and New York require a written one by statute; every other state treats it as strongly recommended.

Agency contacts

Maine Secretary of State, Bureau of Corporations, Elections and Commissions, Division of Corporations

Website: www.maine.gov/sos/corporations-commissions
Phone: (207) 624-7752
Email: CEC.Corporations@maine.gov
Mail: Division of Corporations, 101 State House Station, Augusta, ME 04333-0101
Office: Burton M. Cross Building, 111 Sewall Street, 4th Floor, Augusta, ME 04330
Hours: Office hours 8:00 AM to 5:00 PM Eastern, Monday to Friday. Customer service telephone hours 10:00 AM to 5:00 PM.

South Dakota Secretary of State - Business Services

Website: sdsos.gov
Phone: (605) 773-4845
Email: corpinfo@state.sd.us
Mail: Capitol Building, 500 East Capitol Avenue, Suite 204, Pierre, SD 57501-5070
Office: 215 E. Prospect Avenue, Pierre, SD 57501
Hours: 8:00 AM to 5:00 PM Central, Monday to Friday

Maine Revenue Services

Website: www.maine.gov/revenue
Phone: (207) 624-9595
Mail: Maine Revenue Services, P.O. Box 1060, Augusta, ME 04332-1060
Office: 51 Commerce Drive, Augusta, ME 04330
Hours: 8:00 AM to 5:00 PM Eastern, Monday to Friday

South Dakota Department of Revenue

Website: dor.sd.gov
Phone: (605) 773-3311
Mail: 445 E Capitol Avenue, Pierre, SD 57501
Hours: 8:00 AM to 5:00 PM Central, Monday to Friday

Frequently Asked Questions

Is it cheaper to form an LLC in Maine or South Dakota?

South Dakota is cheaper at formation ($150) than Maine ($175). Ongoing costs are also different: $155 vs $185 per year. Total over three years: $615 vs $730.
Can I form an LLC in Maine if I live in South Dakota?

Yes, but your South Dakota business will almost certainly need to register as a foreign LLC in South Dakota too, which means paying South Dakota's foreign registration fee and any ongoing South Dakota obligations on top of the Maine ones. The "form elsewhere to save" math usually doesn't work for operating businesses; it only works when you have no physical operations tied to any specific state.
How long does it take to form an LLC in Maine vs South Dakota?

Maine online turnaround varies; South Dakota online: 1 business day. Maine offers paid expedite from $50. South Dakota offers paid expedite from $50.
Which state has lower taxes for an LLC, Maine or South Dakota?

Maine: state income tax applies to member-level pass-through income, no entity-level franchise or LLC tax. South Dakota: no state income tax, no entity-level franchise or LLC tax.
Do both states require a registered agent?

Yes. Every US state (and DC) requires every LLC to maintain a registered agent with a physical street address in the state. Maine and South Dakota both have this requirement. You can serve as your own agent if you live in the state; most out-of-state filers use a commercial agent for $50 to $125 per year.
Do I need a written operating agreement in Maine or South Dakota?

Maine requires LLCs to adopt a written operating agreement by statute. South Dakota treats it as strongly recommended rather than required. In practice, any LLC with more than one member, or any LLC planning to preserve its liability shield, should have a written agreement regardless of which state it's formed in.
Which state should I pick if I run an online business from home?

Form in the state you actually live in. Your home state's Department of Revenue treats your residence as nexus regardless of where the LLC is filed, which means you owe state income tax there anyway. Forming in Maine or South Dakota to escape your home state's tax doesn't work; it adds paperwork. The non-resident filings make sense when you genuinely operate nowhere in particular: international founders, purely passive holding entities, or real-estate LLCs owning property in other states.

Full state guides

MaineOpen Maine LLC guide →
South DakotaOpen South Dakota LLC guide →

More Maine and South Dakota comparisons

More Maine vs ...

More South Dakota vs ...

Sources

Filing fee: www.maine.gov/sos/corporations-commissions/i-need-a-business-form/limi… · verified April 21, 2026
Maine Secretary of State LLC Forms page: Certificate of Formation (Form MLLC-6) filing fee is $175. Current processing time published as 35 to 40 business days for routine filings. Maine does not offer online formation filing; Form MLLC-6 is mail-in only.
Expedited filing: www.maine.gov/sos/sites/maine.gov.sos/files/content/assets/250c200-4.d… · verified April 21, 2026
Chapter 200 Rules for the Use of Expedited Service in Corporations: 24-hour service fee $50.00, immediate (same-day) service fee $100.00. Each request must be accompanied by the appropriate expedite fee in addition to the regular filing fee. Availability is subject to staffing. The 24-hour $50 tier is reported as the default expedited option.
Certificate of Formation form: www.maine.gov/sos/corporations-commissions/i-need-a-business-form/limi… · verified April 21, 2026
Form MLLC-6 Certificate of Formation is the fillable PDF Maine uses to form a domestic LLC under Title 31 Chapter 21 (Maine Limited Liability Company Act). Hosted under the SoS inline-files directory.
Business name search: apps3.web.maine.gov/nei-sos-icrs/ICRS?MainPage=x · verified April 21, 2026
Maine Interactive Corporate Services (ICRS) entity name search. Redirected from legacy icrs.informe.org URL. Use to confirm name availability before filing.
Naming rules: legislature.maine.gov/legis/statutes/31/title31sec1508.html · verified April 21, 2026
31 M.R.S.A. §1508 governs LLC naming requirements, including the required designator ('limited liability company,' 'LLC,' 'L.L.C.,' or similar) and distinguishability from other entities on the Secretary of State's records.
Operating agreement requirement: legislature.maine.gov/legis/statutes/31/title31sec1531.html · verified April 21, 2026
31 M.R.S.A. §1531(1)(B) provides that to form an LLC 'a limited liability company agreement must be entered into or otherwise existing.' The agreement may be entered before, after, or at the time of filing the certificate, and may be written, oral, or implied under §1521, but the Maine Limited Liability Company Act requires that one exist. Maine is therefore classified as an operating-agreement-required state alongside California, Delaware, Missouri, and New York.
Publication requirement: legislature.maine.gov/legis/statutes/31/title31ch21sec0.html · verified April 21, 2026
Title 31 Chapter 21 (Maine Limited Liability Company Act) contains no newspaper publication requirement for LLC formation. Not required.
Foreign LLC registration fee: www.maine.gov/sos/corporations-commissions/i-need-a-business-form/limi… · verified April 21, 2026
Form MLLC-12 Statement of Foreign Qualification to Conduct Activities: filing fee $250 for foreign LLCs registering to do business in Maine.
Annual report fee: www.maine.gov/sos/corporations-commissions/filing-an-annual-report · verified April 21, 2026
Maine Secretary of State Filing an Annual Report page: annual report is required each year to maintain good standing; legal filing deadline is June 1. Annual report fee is $85 for domestic LLCs (Form MLLC-13) and $150 for foreign LLCs, per the LLC forms fee schedule. Online filing through Annual Reports Online is available; paper filings also accepted.
Corporate income tax rate: www.maine.gov/revenue/taxes/income-estate-tax/corporate-income-tax-112… · verified April 21, 2026
Maine Revenue Services Corporate Income Tax (1120ME): graduated corporate income tax from 3.5% on income up to $350,000 to 8.93% on income in excess of $3,500,000. Reported as 8.93% top marginal rate. Does not apply to LLCs taxed as pass-through entities; applies to LLCs electing C-corp treatment.
Sales tax rate: www.maine.gov/revenue/taxes/sales-use-service-provider-tax/rates-due-d… · verified April 21, 2026
Maine Revenue Services Sales and Use Tax Rates: general sales tax rate is 5.5%. Higher rates apply to specific categories (prepared food 8%, rentals of lodging 9%, short-term auto rental 10%, adult-use marijuana 10%). Service Provider Tax on enumerated services is 6%.
Franchise tax: www.maine.gov/revenue/taxes/income-estate-tax/franchise-tax-1120b-me · verified April 21, 2026
Maine Revenue Services Franchise Tax (1120B-ME): the Maine franchise tax is imposed only on banks and other financial institutions. No general franchise or capital-stock tax on ordinary LLCs. Recorded as applies: false.
Filing fee: sdsos.gov/general-information/filing-fees.aspx · verified April 21, 2026
SD SoS filing fee schedule: Domestic LLC Articles of Organization filed electronically online is $150; filed via paper is $165 (includes the $15 paper filing fee). Online is the default; filingFee captures the online amount.
Expedited filing: sdsos.gov/general-information/filing-fees.aspx · verified April 21, 2026
SD SoS offers expedited processing for any filing at an additional $50 flat fee, defined as completion sooner than the normal course of business on request. Typical expedited turnaround is 24 hours.
Foreign LLC registration fee: sdsos.gov/general-information/filing-fees.aspx · verified April 21, 2026
Foreign LLC Certificate of Authority online filing fee is $750; paper is $765 (includes $15 paper filing fee). This is materially higher than the $150 domestic fee; South Dakota is one of the most expensive states for foreign LLC registration.
Operating agreement requirement: sdlegislature.gov/Statutes/47-34A · verified April 21, 2026
SDCL 47-34A (Uniform Limited Liability Company Act) defines an operating agreement under 47-34A-103 as any valid agreement, written or oral, governing relations among members, managers, and the LLC. The statute does not require the operating agreement to be in writing.
Publication requirement: sdlegislature.gov/Statutes/47-34A · verified April 21, 2026
SDCL 47-34A contains no newspaper publication requirement for LLC formation. Only NY, AZ, and NE require publication.
Annual report fee: sdsos.gov/general-information/filing-fees.aspx · verified April 21, 2026
SD SoS filing fee schedule: LLC Annual Report filed electronically online is $55; filed via paper is $70 (includes the $15 paper filing surcharge). Due first day of the anniversary month each year.
Franchise tax: dor.sd.gov/businesses/taxes/ · verified April 21, 2026
SD Department of Revenue confirms South Dakota does not impose a general corporate income tax or franchise tax. A narrow bank franchise tax applies only to financial institutions under SDCL 10-43.
Corporate income tax rate: dor.sd.gov/businesses/taxes/ · verified April 21, 2026
South Dakota has no corporate income tax. Field set to null.
Sales tax rate: dor.sd.gov/businesses/taxes/sales-use-tax/ · verified April 21, 2026
SD Department of Revenue: the state sales and use tax rate is 4.2%. Municipalities may impose up to 2% additional general sales tax.
Business name search: sosenterprise.sd.gov/BusinessServices/Business/FilingSearch.aspx · verified April 21, 2026
SD SoS Enterprise business information search. Use before filing Articles of Organization to confirm name availability.
Online filing portal: sosenterprise.sd.gov/BusinessServices/Business/RegistrationInstr.aspx · verified April 21, 2026
SD SoS Enterprise online business registration portal. Online LLC filings are typically approved immediately or within one business day; paper filings take about 3-5 business days plus mail transit.
Certificate of Formation form: sdsos.gov/docs/business/llc-domestic-articlesoforganization.pdf · verified April 21, 2026
Official Domestic LLC Articles of Organization fillable PDF published by the SD SoS, used for paper filings.

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