Tax-Practice Workbench

Live KPIs, cases, research notes, statutory deadlines, and an IRS forms catalog - server-fed from the local Feltner data store. Every figure on this page is real data; nothing is mocked.

Cases - Open

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Cases - Closed

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all-time

Research Notes

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tax-law indexed

Deadlines - 30d

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upcoming

Forms Catalog

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IRS reference

Tax Year

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filing year

Activity

Charts

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Case filings - last 12 months

Deadlines this quarter - by type

Coming up

This week

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Recent

Latest case activity

Case	Type	Status	Decided
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Real IRS calendar

Filing-deadline countdown

verified irs.gov

Live countdown to the next major IRS filing deadlines for individuals (1040), corporations (1120), non-profits (990), and quarterly estimated payments. Calendar pulled from IRS Publication 509 + Rev. Proc. 2025 series; each card updates every second.

Methodology

Calendar source

Source: IRS Publication 509 (2026) and Rev. Proc. 2025-49. Each deadline is shifted to the next business day when the statutory date falls on a Saturday, Sunday, or DC observed holiday (Emancipation Day shifts the 1040 deadline some years). Cross-checked against the latest IRS Internal Revenue Bulletin mirrored in feltner.db at /api/public/feltner/irb.

2026 brackets · federal only

Federal income tax estimator

For practice / learning

Estimates federal income tax liability using IRS inflation-adjusted brackets per Rev. Proc. 2024-40. Toggles compare standard deduction vs itemized; the EITC checker uses the published Pub. 596 income ceilings. Estimate only — not tax advice.

Inputs

Filing status Gross income ($) Itemize instead of standard deduction Qualifying children (under 19, or under 24 if full-time student) Federal tax already withheld ($)

Estimated result

Taxable income

$—

Federal tax owed

$—

Effective rate

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Marginal rate

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Refund or balance due

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based on withholding entered

Bracket breakdown

How that number is built

Methodology

What is and isn't included

Included: federal income brackets (Rev. Proc. 2024-40), standard deduction by filing status, itemized override, EITC eligibility check (Pub. 596 income ceilings).
NOT included: state/local taxes, FICA (Social Security + Medicare), self-employment tax, Additional Medicare Tax, NIIT, AMT, Child Tax Credit phase-out, IRA/401(k)/HSA deductions, foreign tax credits.

For a real return, use IRS Form 1040 or paid software. This page exists to make the bracket math transparent.

Live data

Cases

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Title	Type	Status	Decided	Citation
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Searchable index

Research notes

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Title	Topic	Imp.	Updated
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Statutory calendar

Upcoming deadlines

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Statutory dates only. The IRS slides any due-date that falls on a weekend or D.C. holiday to the next business day. This calendar shows the statutory date - confirm the actual filing day on the IRS calendar before relying on it.

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IRS catalog

Tax forms

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Treasury / IRS

IRS Internal Revenue Bulletin

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Weekly compilation of Treasury / IRS guidance: revenue rulings, revenue procedures, notices, announcements, and Treasury decisions. Fetched daily from the TCG home server, source irs.gov/irb.

Bulletin	Kind	Title	Source
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