Tax Season 2026 Blog Series [2/10] – Documents That Your Accountant Needs

In the previous blog of the series, we discussed the tips to better prepare for the tax season.

Tax season is here, and you might start feeling overwhelmed thinking about tax payments, refunds, and all the paperwork involved. While accountants help you sort and summarize your taxes, you can make the process much easier by preparing everything beforehand.

If you rely on a professional to file your taxes, you have likely visited your accountant more than once just because you forgot an important document. Since you file taxes only once a year, you can easily miss out on what is required.

Here’s a simple way to stay organized, avoid last-minute stress, and prepare your tax return with a clear plan of attack.

1. Documents for Identification

The IRS needs to verify everyone included in your tax return. You should keep valid identification documents ready, even if you visit the same tax preparer every year. You should also keep Social Security details for your spouse and dependents to avoid delays.

(a) Basic Identification Details

• Social Security Number (SSN) or ITIN for you, your spouse, and dependents
• Names as registered with the Social Security Administration
• Date of birth for you, your spouse, and dependents

(b) Personal and Financial Information

• Current address (update the IRS if it has changed)
• Bank routing number and account details for direct deposit or payments
• Updated details with SSA in case of any name change

(c) Previous Tax Records

• Copy of last year’s tax return (for you and your spouse)
• Adjusted Gross Income (AGI) from last year
• Last year’s refund amount
• Self-select PIN (if you e-filed previously)
• IP PIN issued by the IRS (if applicable)
• Access to your IRS online account (if available)

2. Proof of Income

Your tax return should reflect all your income, not just what you remember. You must report every income source accurately, as missing details can lead to penalties. Organizing these documents beforehand helps you report income accurately and avoid last-minute stress during tax filing.

(a) Employment and Earnings

• Form W-2 (including corrected W-2, if applicable)
• Form 1099-NEC (freelance or gig work)
• Form 1099-MISC (miscellaneous income)
• Form W-2G (lottery and gambling winnings)
• Records of gambling losses (to offset winnings)

(b) Investment and Retirement Income

• Form 1099-INT (interest income)
• Form 1099-DIV (dividends and distributions)
• Form 1099-B (broker transactions, if applicable)
• Schedule K-1 (partnership, S-corp, estate income)
• Form 1099-R (retirement distributions, pensions, annuities)
• Form 8606 (if applicable for IRA contributions/distributions)

(c) Government and Other Income Sources

• Form 1099-G (unemployment benefits or state tax refund)
• Form SSA-1099 (Social Security benefits)
• Alimony received documentation (if applicable)
• Records of jury duty income or other miscellaneous earnings

(d) Property, Business, and Digital Income

• Rental income statements
• Profit and loss statement (business or farming income)
• Form 1099-K (payment apps and online marketplaces)
• Form 6252 (installment sale income details)
• Records of property sale income (Form 1099-C, if applicable)
• Foreign income and bank account records (FBAR, if applicable)
• Form 1099-DA (digital asset transactions)
• Records of cryptocurrency or digital asset transactions (if no form received)

3. Credits & Deductions Documentation

You should keep all records that help you claim eligible credits and deductions, as they can significantly reduce your tax liability.

(a) Education and Childcare

• Childcare or dependent care expense records
• Form 1098-T (education expenses)
• Form 1098-E (student loan interest)
• Receipts for tuition and books

(b) Home and Property

• Mortgage interest statements
• Property tax records

(c) Healthcare and Contributions

• Medical and healthcare expenses (if itemizing)
• Retirement contributions
• HSA (Health Savings Account) contributions
• FSA (Flexible Spending Account) contributions

(d) Donations and Special Credits

• Charitable donation records (cash and non-cash)
• Energy efficiency receipts
• Clean vehicle purchase records

4. Self-Employment & Side Job Records

If you earn income independently, you must maintain proper records to report income and claim expenses accurately.

(a) Income Records

• Profit and loss statements
• Gross receipts
• Invoices issued
• Receipt books
• Deposit records (cash and credit sales)

(b) Tax and Expense Tracking

• Estimated tax payments (Form 1040-ES)
• Business income and expense records
• Mileage logs (travel and car expenses)
• Travel, transportation, and gift expense records
• Office expense records

5. Business Expense Documentation

You should maintain clear proof of all business expenses to support your claims during tax filing or audits.

• Canceled checks or proof of electronic payments
• Cash register receipts
• Account statements
• Credit card receipts and statements
• Invoices
• Records showing payee, amount, date, and purpose of each expense

6. Business Assets Records

You should track asset-related details to accurately calculate depreciation, deductions, and gains or losses.

• Records of asset purchase (date and cost)
• Cost of improvements
• Section 179 deduction records
• Depreciation and casualty loss records
• Usage details of the asset
• Sale or disposal records (date, price, and expenses)
• Purchase and sales invoices
• Real estate closing statements
• Payment proofs related to assets

7. Employment Tax Records

You should keep all employment tax records safely for at least four years to meet compliance requirements.

8. Important 2026 Tax Numbers

You should stay up to date on key tax figures to plan your filing accurately.

• Standard Deduction: Single or Married Filing Separately: $16,100
• Standard Deduction: Head of Household: $24,150
• Standard Deduction: Married Filing Jointly: $32,200
• Child Tax Credit: Up to $2,200 per qualifying child under 17
• Phase-out threshold: $500,000 (Single)
• Phase-out threshold: $1,000,000 (Married Filing Jointly)
• Refund preference: Direct deposit (paper checks being phased out)

Note: Deductions and limits may change each year. You should refer to the IRS website for the latest updates.

Conclusion

In our next tax season blog series, we have covered solutions that protect your tax filing process. You can subscribe to our blogs and receive mail in your email inbox whenever we share new updates to help you stay prepared and secure this tax season.

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