Solo Tax Voucher Reconciler

Free draft mode

100% free. The full reconciliation engine, every figure on this page, and the CSV export are free - no account, no credit card. Pro only adds the client-ready certification extras.
Step 1: Voucher Intake Enter tax figures & voucher payments Safe-harbor targets calculate live Step 2: Your Tax Workpaper Review Client Confirmation Sheet
STEP 1 · INTAKE CONTROLS ● Updates live as you type Enter prior year tax, projected tax & quarterly payments

Total tax on last year's return

Sets the 100% or 110% rule

Your 2026 total tax estimate

W-2 or other 2026 withholding

Higher AGI may set the 110% rule

How the target splits by quarter

Voucher payments Optional per quarter

Q1Due Apr 15, 2026

Q2Due Jun 15, 2026

Q3Due Sep 15, 2026

Q4Due Jan 15, 2027

Sample figures are pre-loaded - use “↺ Clear & enter my own” above to start from blank, then leave a skipped quarter blank.

Choose a scenario tab or enter your figures.

STEP 2 · YOUR TAX WORKPAPER Safe-harbor waterfall & client confirmation sheet

Reconciliation waterfall

Results appear once the required figures are in.

Pending

Add the four required amounts to check each voucher against the safe-harbor target.

Lower safe-harbor target

-

Lower of the two bases below

0% covered

90% of projected 2026 tax

-

Basis

Prior-year tax basis

-

Rule

Required through vouchers

-

Withholding offset pending

Paid across four vouchers

-

0% of required

Net variance

-

Paid minus required

Target-to-payment waterfall

Bars share one dollar scale

  1. Annual safe-harbor target-
  2. Not due through vouchers-
  3. Voucher requirement-
  4. Q1 payment applied-
  5. Q2 payment applied-
  6. Q3 payment applied-
  7. Q4 payment applied-
  8. Closing gap-

Quarter-by-quarter ledger

Overpayments carry forward to later quarters

Quarter Due date Scheduled Paid Paid on Confirmation Paid vs scheduled Variance (carryfwd) Status Review flag
Q1Apr 15, 2026-------
Q2Jun 15, 2026-------
Q3Sep 15, 2026-------
Q4Jan 15, 2027-------
Annual totals----

This workspace flags possible Form 2210 underpayment exposure. It does not compute an official Form 2210 penalty and is not tax advice. Due dates that land on a weekend or legal holiday shift to the next business day. Verify payment records against your IRS online account and confirm tax treatment with a qualified professional.

Draft

An unwatermarked certification with review notes and client sign-off is part of Pro at $39 per month.

Client confirmation sheet

Tax year 2026 · Form 1040-ES estimated payments

Certification
Draft, not certified
Return filed as
-
Annual safe-harbor basis
-
Installments due
-
Remitted to date
-
Balance position
-
Voucher confirmation ledger
Voucher Deadline Installment due Amount remitted Remittance record Outcome
1 of 404/15/2026-----
2 of 406/15/2026-----
3 of 409/15/2026-----
4 of 401/15/2027-----

Review notes

  • Q1 review pending.
  • Q2 review pending.
  • Q3 review pending.
  • Q4 review pending.

Practitioner sign-off Pro

Sign-off controls are read-only on the free plan.

Prepared from payment records supplied by the taxpayer. Not an IRS document, a filing, or a penalty computation; confirm amounts against IRS account transcripts.

Prepared with Solo Tax Voucher Reconciler