Guides
Guides for Florida corporations getting caught up.
Each guide answers one question Florida owners ask when the books or the business returns have fallen behind: what it costs, what the IRS or Florida expects, and what to do first. Every figure links to its IRS or Florida source.
Late returns & letters
Unfiled federal returns, what they cost, and what to do about IRS letters and lenders.
What happens if an S corporation files Form 1120-S late?
A late 1120-S costs $255 per shareholder per month, up to 12 months, for returns due in 2026, even with no tax owed. Past-year amounts, relief and next steps.
What happens when a C corporation doesn’t file Form 1120?
An unfiled Form 1120 draws late-filing and late-payment penalties plus interest, and the IRS can assess the tax at any time. What it costs and how to catch up.
The IRS sent a letter about a business return you never filed. What now?
A CP259 or CP518B means the IRS has no record of a business return it expects. What the letter asks for, why not to ignore it, and how to answer by filing.
A lender wants business tax returns you haven’t filed. What now?
Lenders that verify business returns with the IRS use Form 4506-C, and an unfiled year has no record to check. What to tell the lender and what to do first.
How do you find out which business returns you’ve missed?
Pull the IRS entity and account transcripts, then check EFTPS, Florida eFile and Pay, Sunbiz and payroll records. List each missed filing by period.
Missed the S corporation election, or not sure it was accepted?
For a corporation, no accepted Form 2553 means C corporation tax and Form 1120. How late S election relief works, how to check IRS records, and what to file.
Florida filings
Corporate income tax, sales tax and the Sunbiz annual report.
Behind on Florida sales tax? How to catch up missed DR-15 returns
File a DR-15 for every missed period, in order, even with no sales. Each late return can cost 10% of the tax, at least $50, plus interest on late tax.
Late Florida Form F-1120: who must file, what it costs and how to catch up
Every Florida C corporation files Form F-1120 each year, even with no tax. Late: 10% of unpaid tax a month (up to 50%), or $50 a month if none, plus interest.
Dissolved on Sunbiz: how to reinstate a Florida corporation or LLC
Florida dissolves a company whose annual report is still missing after the third Friday of September. How Sunbiz reinstatement works, the fees, and the taxes.
Staying current
Keeping the books right once you’re caught up.
General information, not advice for your situation. Written by Cayde Accounting & Tax. Updated October 31, 2026.
Free call · 15 minutes · No obligation
See your way back to current before you commit to anything.
Tell us what’s outstanding in a free 15-minute call with a member of our catch-up team. We’ll explain how we’d get you caught up and keep you there, and your written scope and fixed quote follow before any work begins.
- Free 15-minute call. No obligation to hire us afterwards.
- Catch-up projects start at US$2,500 per year; optional monthly bookkeeping from US$349 a month. All prices in U.S. dollars.
- Returns reviewed, signed and filed by independent U.S. tax professionals.
+2A growing team, and you can see who’s on it. Meet the team
Prefer email? info@caydetax.com
Request received
You’re in.
- Our team contacts you to set a time for your 15-minute call.
- You tell us what’s behind; we explain how we’d get you caught up and keep you there.
- Your written scope and fixed quote follow, and you decide. Nothing starts, and nothing is charged, until you approve it.
We’ll contact you during business hours, Monday to Friday, 10 a.m. to 7 p.m. Eastern.