Taxes after converting: Hawaii GET and federal returns

The federal return usually does not change at all

A single-member LLC that does not elect corporate tax treatment is a disregarded entity. The IRS's own description is one line: the LLC's activities are reflected on its owner's federal return, generally on Form 1040 Schedule C, exactly as a sole proprietorship's were.

Self-employment tax follows the same path. The IRS states that an individual owner of a single-member LLC operating a trade or business is subject to the tax on net earnings from self-employment in the same manner as a sole proprietorship.

So the conversion's federal effect is mostly invisible at filing time: the same Schedule C, the same SE tax, the same estimated payments. What changes is whose bank account the money sits in on the day you file.

A multi-member LLC is the flip side of every one of those sentences. Two or more members make the company a partnership for federal purposes, with its own return and its own EIN. EIN and tax IDs after converting draws that line precisely.

The IRS states that a single-member LLC not electing corporate treatment is a disregarded entity reflected on the owner's return, generally on Schedule C. — Internal Revenue Service, retrieved 2026-09-29

The IRS states that an individual owner of a single-member LLC operating a trade or business is subject to the tax on net earnings from self-employment in the same manner as a sole proprietorship. — Internal Revenue Service, retrieved 2026-09-29

The Hawaii filings always change hands

The state side is the opposite story. Hawaii's Department of Taxation does not disregard a single-member LLC for its own taxes, and its instructions say so in one passage.

Even though an entity may be disregarded for income tax purposes, the state treats it as a separate entity that must obtain its own license and file its own returns for general excise and the other state taxes. The GET license is registered on Form BB-1, the Basic Business Application, with a one-time $20 fee, in the LLC's name on its own Hawaii Tax ID.

So the conversion always produces a new taxpayer on the state side, whatever the federal answer. The proprietorship's tax registrations close on Form GEW-TA-RV-1 with its final GET return, and the LLC's registrations open with its own.

Sequence them so the two never overlap on the same receipts. The changeover date is the line: receipts before it are the proprietorship's, receipts after it are the LLC's, and both returns reconcile to it.

Hawaii's Form BB-1 instructions state that an entity disregarded for income tax is still a separate entity that must obtain its own license and file its own state tax returns. — Hawaii Department of Taxation, retrieved 2026-09-29

Hawaii tax licenses and permits are cancelled on Form GEW-TA-RV-1, per the published instructions to Form BB-1. — Hawaii Department of Taxation, retrieved 2026-09-29

GET falls on gross income, not profit

The GET is the tax most new-to-Hawaii businesses misprice, and it does not change with the conversion. It falls on gross income, which the Department of Taxation defines as total business income before deducting business expenses.

A business that clears a small profit still owes GET on its full receipts. A business that loses money still owes it, which is why a slow year does not slow this particular tax down.

The Department is blunt about what GET is not: GET is not a sales tax, it is a tax on the business itself, and businesses may choose to pass it on to customers but are not required to. If a business does pass it on, the passed-on amount is included in gross receipts, so it is taxed too.

The retail rate, covering services, is 4.5 percent, which includes the 0.5 percent county surcharge. Wholesaling runs at 0.5 percent, and insurance commissions at 0.15 percent. None of these rates changed when you formed the company, and none will change when you file its first return.

Hawaii's Department of Taxation defines GET gross income as total business income before expenses, states that GET is not a sales tax, and that passing it on to customers is optional. — Hawaii Department of Taxation, retrieved 2026-09-29

4.5%Hawaii's GET rates are 4.5 percent for retail goods and services and most other activities, including the county surcharge, 0.5 percent for wholesaling, and 0.15 percent for insurance commissions. — Hawaii Department of Taxation, retrieved 2026-09-29

The GET filing calendar

The LLC's GET filings run on the same calendar rules every Hawaii business runs on, and the filing frequency follows expected liability.

Form G-45, the periodic return, is due 20 days after the tax period ends. The period is semiannual if expected annual GET liability is $2,000 or less, quarterly at $4,000 or less, and monthly above $4,000. Form G-49, the annual return and reconciliation, is due on the 20th day of the fourth month after the tax year ends.

One line from the Department catches every new business owner: taxpayers must file a return even if they have no income. A quiet quarter is not a skipped quarter.

The first return under the LLC's ID is where the changeover discipline pays for itself. Receipts before the changeover date belong on the proprietorship's final return, and only the receipts after it belong on the company's. The cost breakdown's changeover-date advice applies to every period boundary in the first year.

20 daysHawaii's Form G-45 is due 20 days after the tax period ends, filed semiannually, quarterly, or monthly by expected liability, and Form G-49 is due the 20th day of the fourth month after year end. — Hawaii Department of Taxation, retrieved 2026-09-29

Estimated payments and the $1,000 line

Federal estimated payments are the one federal habit the conversion does not interrupt, because the Schedule C they attach to never moved.

The IRS rule is unchanged by the LLC: individuals, including sole proprietors, partners, and S corporation shareholders, generally have to make estimated tax payments if they expect to owe tax of $1,000 or more when their return is filed. A disregarded single-member LLC's income is the owner's income, so the same rule and the same threshold apply.

The practical habit for a converting owner is unchanged too: a set share of every payment the company's account receives moves to a tax account the day it lands. The account's name changed. The share did not. The contracts guide covers the banking separation that makes the habit work.

$1,000The IRS states that individuals, including sole proprietors, partners, and S corporation shareholders, must make estimated payments if they expect to owe $1,000 or more. — Internal Revenue Service, retrieved 2026-09-29

Employees, excise, and the lines that move numbers

Employment is the one fact that moves numbers on both sides of the conversion, and it moves them in opposite directions.

The income tax side stays with you: "the disregarded single-member LLC still reports on your return. The employment side moves to the company: the IRS requires a single-member LLC to use its own name and EIN for reporting and paying employment taxes, from the first wages the company pays."

Hawaii's employment registrations follow the same line. The unemployment account and the withholding account move to the LLC's numbers before its first payroll, and the workers' compensation policy follows with the employer record, as the contracts guide covers.

Excise obligations move the EIN the same way employment does: a single-member LLC that has to file excise taxes needs its own EIN, per the IRS. Most service businesses hold no federal excise registrations, so read that line only if your trade carries one.

The IRS states that a single-member LLC disregarded for income tax must still use its own name and EIN for employment taxes, and needs a new EIN for employment or excise obligations. — Internal Revenue Service, retrieved 2026-09-29

The first-year dates worth writing down

Four dates organize the converted company's first year, and none of them are new inventions.

The GET periodic return dates, set by the frequency your liability lands in. The G-49 date, the 20th day of the fourth month after the year ends. The LLC's annual report, $15, due on the last day of the quarter matching the formation date, with none due in the year you form. And the federal estimated payment dates, which never moved.

A licensed trade adds its boards' dates on top: the contractor renewal in even-numbered Septembers, the shop license in odd-numbered Decembers, the electrician's triennial June. Those are on the trade pages and on the licenses guide.

Write all of them into one calendar the week the LLC forms. The conversion's tax work is small in dollars and unforgiving in dates, and the dates are the part nobody relives well from memory. The conversion checklist holds the full list.

$15A Hawaii LLC files a $15 annual report due on the last day of the quarter in which the company was organized, and an LLC organized in the same year a report would be due owes no report that year. — Hawaii Department of Commerce and Consumer Affairs, Business Registration Division, retrieved 2026-09-29

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