Stock Cost Basis Calculator : Stock Splits, DRIP & Wash Sales

TAX BASIS v1.0

Compute your tax-adjusted cost basis per share accounting for corporate stock splits, reinvested dividend shares, and wash-sale adjustments.

Active Tool: Stock Cost Basis Calculator

Real-time equity market calculations and analytics

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Tax Basis Adjustments

Adjusted Cost Basis

Adjusted Basis Per Share$61.65Across 212.5 total shares
Post-Split Original Shares:200 shares @ $60.00
Total Adjusted Cost Basis:$13,100.00
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Informazioni e funzionamento

Discover how Stock Cost Basis Calculator executes your workflow locally in your browser with zero server uploads and total privacy.

Stock Cost Basis Calculator on Neranjan Tools is an ultra-fast, client-side utility crafted to deliver professional-grade processing without the privacy risks or upload delays of traditional cloud services. Whether handling sensitive business contracts, personal photos, or code snippets, you can accomplish your task in seconds.

Unlike conventional web converters that upload your confidential files to remote third-party servers, this tool operates 100% inside your browser's local sandbox using HTML5 Canvas, WebAssembly, and modern JavaScript engines. Your files are loaded into your device's memory, processed instantly by your local CPU and GPU, and saved directly to your disk, ensuring zero data leaks, zero server logging, and immunity to malware execution.

Guida passo dopo passo

1

Enter Original Purchase Basis

Input initial shares purchased and the price paid per share.

2

Select Stock Split Multiple

Specify any forward split ratio (e.g. 2:1, 3:1, 10:1).

3

Add DRIP & Adjustments

Include reinvested dividend shares and disallowed wash sale losses to compute adjusted basis per share.

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Zero archiviazione sul server

Files never leave your device. Complete immunity from server breaches or data leaks.

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Prestazioni istantanee

Immediate processing powered by your local device hardware with zero upload wait times.

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Compatibile con tutti i dispositivi

Works smoothly on iOS, Android, macOS, Windows, and Linux across all modern browsers.

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100% gratuito per sempre

No hidden subscriptions, no credit card forms, and unlimited free daily usage.

Garanzia di privacy 100% lato client

Neranjan Tools guarantees that Stock Cost Basis Calculator processes your data purely in your browser memory. We never store, log, or inspect your files, protecting you fully against virus uploads and data breaches.

Guida e base di conoscenza

Domande frequenti (10)

Domande e risposte comuni su questo strumento.

A stock split multiplies your number of shares while dividing your cost basis per share by the same ratio, leaving your total invested capital unchanged.
Each dividend reinvestment is treated as a new stock purchase with its own purchase price and date, increasing your total cost basis.
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Cronologia delle versioni

Versione attuale: v1.0
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