Tax Preparation & Filing That Catches What Others Miss
Twelix prepares, reviews, and files your individual and business tax returns with precision. We find the deductions your DIY software misses, e-file federal and state on time, and flag the errors before the IRS does.
What's Included in Tax Prep & Filing
Tax readiness is a year-round activity
Businesses that stay ahead of tax deadlines all year save money and avoid penalties. Here is what we handle each quarter.
Year-End Review & Filing Prep
Tax Season Should Not Feel Like a Fire Drill
Missed deadlines, miscategorized transactions, and DIY software that overlooks deductions are preventable. Penalties, IRS notices, and surprise tax bills are not what you signed up for.
Missed Deadlines
IRS late-filing penalties start at 5% per month, plus interest.
Missing Deductions
DIY software cannot identify industry-specific tax savings.
Filing Errors
Incorrect returns trigger IRS notices, audits, and amendments.
Multi-State Complexity
Operating in multiple states means multiple filing requirements.
What Is Tax Preparation & Filing?
Our service covers everything from data gathering to final e-filing. We review your financials, identify every eligible deduction, prepare your individual and business returns, review them for accuracy, and file federal and state returns on time. If you already have a CPA, we prepare the financials they need.
What You Get
Why businesses switch to Twelix
Most clients come to us after outgrowing DIY bookkeeping, losing confidence in their numbers, or realizing their current setup can’t keep up. Here’s what changes when Twelix takes over:
How It Works
A structured, repeatable process that takes the guesswork out of onboarding and monthly bookkeeping.
Tax Readiness Call
We assess your books and documents. No charge.
Document Collection
Secure upload of W-2s, 1099s, and financial statements.
Preparation & Review
We prepare your returns and review for accuracy and savings.
E-File & Confirm
You approve, we e-file, and you receive confirmation receipts.
Every US business tax deadline in one place
Missing a single filing deadline can cost thousands. Here is every date your business needs to know.
Q4 estimated tax payment (prior year)
Penalty: 0.5% per month on underpayment
Q1 estimated tax payment
Penalty: 0.5% per month on underpayment
Q2 estimated tax payment
Penalty: 0.5% per month on underpayment
Q3 estimated tax payment
Penalty: 0.5% per month on underpayment
IRS late-filing penalties: 5% of unpaid taxes per month, up to 25%.
Transparent, Flat-Rate Pricing
No hourly billing. No hidden fees. One flat rate based on your transaction volume. See our plans or get a custom quote.
Bookkeeper vs. CPA, who does what?
Both roles are essential, but they serve different purposes. Twelix bridges the gap so your CPA gets clean, accurate data every time.
| Task | Bookkeeper | CPA |
|---|---|---|
| Record daily transactions | ||
| Bank & credit card reconciliation | ||
| Accounts payable / receivable | ||
| Payroll processing | ||
| Monthly financial statements | ||
| Tax return preparation & filing | ||
| Tax planning & strategy | ||
| IRS audit representation | ||
| Financial forecasting & advisory | ||
| Business entity structuring |
Frequently Asked Questions
Both. We prepare your returns, review them with you, and e-file federal and state. If you'd prefer your CPA file, we deliver CPA-ready returns.
Individual (Form 1040) returns and business returns for sole proprietors, LLCs, partnerships, S-corps, and C-corps. Federal and state in all 50 states.
Yes. We calculate and file your quarterly estimated tax payments to help you avoid underpayment penalties.
Absolutely. We file in all 50 states. If you operate across state lines, we ensure compliance everywhere.
Yes. Our tax review service checks for errors, missed deductions, and compliance issues on returns prepared elsewhere.
Flat-rate pricing based on entity type, return type, and complexity. No hourly billing. Get a quote during your free consultation.
We handle multi-year preparation and filing. We get you current and compliant, one year at a time.
We work with the tools you already use
No need to switch platforms. We integrate with your existing software or help you choose the right tool during onboarding.
