Lunar PapersSpace Age Tech for Taxes
I prepare returnsIt's my own return →
For tax preparers · no account needed

One more look at the return before it goes out.

Upload a prepared return, and last year's if you have it. Get back what to fix, what to check, the totals that don't tie, the year-over-year swings and the carryforwards, in a few minutes.

  1. 1Drop the return (1040, 1120-S, 1065 or 1120)
  2. 2Add the prior-year return for the comparison
  3. 3Get the review by email as a PDF, and on screen

$19 a return. Your card is charged only when the report is delivered. No account, no subscription. Have the client's documents too? The workbook checks the return against them; the first one is free.

The review you'd do with another hour.

  • Arithmetic and flow. Totals recomputed and traced from schedule to schedule to the main form. Each test says Ties or Off.
  • Year over year. The lines that moved, and the payers, activities and deductions that were there last year and aren't now.
  • Carryforwards. Capital losses, passive losses, NOLs, credits and overpayments tied from last year's ending to this year's use.
  • What to check. Missing forms, inconsistencies, and what is likely to draw a notice, each with its form and line.
What we keep: your name and email. The returns are read in memory and never saved. The report is emailed to you as a PDF and we don't keep a copy. Sample figures are fictional. See our security page.
When you have the documents too

The return check reads the return. The workbook reads everything behind it.

Lunar Papers files what the client sends into your folders, gives a provisional estimate before the return is entered, builds a source-linked Excel workbook, lists the open items, and drafts the request for what's missing. When the return is prepared, it compares it line by line with the workpapers.

From $79 per 1040 and $99 per business return. No subscription, no seat minimum. Your first Standard workbook is free.

The Summary tab of a Lunar Papers workbook: estimated refund, open items, status, and the headline figures, each linked to the tab behind it

The Summary tab of the sample workbook. Fictional taxpayer; every figure links to the schedule behind it.