NH Tax Document Retention Guide: What to Keep and When to Shred (2026)

What the IRS Requires

The IRS has clear rules on how long to keep tax records. They live in IRS Publication 17 for individuals and IRS Publication 583 for small business. The rules turn on the statute of limitations, the period during which the IRS retains the power to audit, adjust, or collect.

The Standard 3-Year Window

For most returns, the IRS has 3 years from the filing date to assess additional tax. The 3-year clock starts on the due date of the return or the date you filed, whichever is later. A 2024 return filed on April 15, 2025 stays open through April 15, 2028.

The 6-Year Window for Underreported Income

If you omitted income of more than 25 percent of the gross income shown on your return, the IRS gets 6 years to audit. This rule catches a lot of unintentional errors, not only fraud. A landlord who forgets to report rental income, a freelancer who misses a 1099, or an investor who skips a brokerage statement all trigger the longer window.

The Forever Windows

• No statute of limitations for returns never filed
• No statute of limitations for fraudulent returns
• 7 years for claims of loss from worthless securities or bad debt deductions
• Indefinite for records related to property until 3 years past the year you dispose of the property

What This Means for You

The IRS recommends keeping records for at least 3 years. Most tax professionals recommend 7 years to cover the underreporting window with a safety margin. Property records run longer because they roll forward into the cost basis of a sale. Records of contributions to a Roth IRA stay forever to prove the basis if you ever need to pull contributions tax-free.

Once the window closes, the records have no audit value. Holding them past the window is a privacy risk, not a tax safeguard. Move them to your shred pile.

New Hampshire Tax Rules: What Stays, What Goes

New Hampshire has no broad personal income tax and no state sales tax. The state’s tax footprint on households is small. Two specific rules matter for retention planning.

The Interest and Dividends Tax (Phased Out 2024)

The Interest and Dividends Tax under NH RSA 77 applied to investment income for individuals, partnerships, fiduciaries, and LLCs through tax year 2024. The tax phased to zero starting January 1, 2025. If you filed a NH I&D return for 2024 or earlier, the NH Department of Revenue Administration has a standard 3-year audit window from the filing date. Keep those returns and supporting records for at least 3 years past the filing date. 7 years is safer.

The Business Profits Tax

Business entities operating in NH file under the Business Profits Tax (BPT) per NH RSA 77-A and the Business Enterprise Tax (BET) per NH RSA 77-E. Both follow a 3-year statute of limitations on assessment, extended to 6 years for substantial omission. If you own a business, treat business tax records the same way you treat IRS records. 7 years minimum.

Property Taxes

NH property taxes are local and assessed by your town. Keep property tax bills and payment receipts for at least 3 years for your own audit defense. Keep them 10+ years if you itemize because the IRS audit window covers itemized deductions, and longer if the property has a cost basis impact on a future sale.

Real Estate Transfer Tax

NH imposes a real estate transfer tax under RSA 78-B at sale. Keep the HUD-1 or closing disclosure, transfer tax receipts, and any related documents until you dispose of the property plus 3 years. These documents go into the cost basis calculation when you sell.

The Practical NH Rule

For NH households: 7 years on returns, 3 years on property tax bills, indefinite on real estate transaction records. Once a document falls outside those windows, shred it.

Household Document Categories and Retention Timelines

Most households accumulate paper across about 12 categories. Here is a category-by-category retention guide.

Tax Returns and Supporting Documents

• Filed tax returns: 7 years minimum, indefinitely if you have the space
• W-2s, 1099s, K-1s: 7 years
• Charitable donation receipts: 7 years
• Medical receipts (if itemized): 7 years
• Home office or mileage logs: 7 years

Bank Statements

• Monthly statements: 1 year unless they support a tax deduction (then 7 years)
• Canceled checks: 1 year, 7 years if tax-related
• Deposit slips: 1 year

Credit Card Statements

• Monthly statements: 1 year unless they support a tax deduction
• Charges for tax-deductible purchases: 7 years

Investment Records

• Brokerage statements: 7 years after sale of the security
• 1099-B forms: 7 years
• Mutual fund records showing cost basis: Until sale plus 7 years
• Retirement account contribution records: Until you receive the distribution plus 7 years
• Roth IRA contribution proof: Forever

Real Estate

• Mortgage documents: Until the mortgage is paid plus 7 years
• Closing documents (HUD-1, Settlement Statement): Until sale plus 7 years
• Home improvement receipts: Until sale plus 7 years (they add to cost basis)
• Property tax bills: 3 years, 7 if itemized

Medical Bills and Insurance

• EOBs: 1 year unless used for tax deduction (then 7 years)
• Medical bills (if itemized): 7 years
• Health insurance policies: Active policy plus 1 year after expiration

Auto and Insurance

• Auto insurance policies: Active plus 1 year
• Auto registration: Active period
• Auto title: Until you sell the car
• Homeowner’s insurance policies: Active plus 1 year

Pay Stubs and Employment

• Pay stubs: Until you reconcile against the year’s W-2, then shred
• Employment contracts: Until 7 years after employment ends
• Benefits enrollment documents: Active plus 3 years

Utilities and Routine Bills

• Utility bills: 1 year (longer if running a home office)
• Phone bills: 1 year
• Internet bills: 1 year

Legal Documents

• Wills, trusts, powers of attorney: Forever (keep in a fireproof safe or with your attorney)
• Marriage certificates, divorce decrees: Forever
• Birth certificates: Forever
• Social Security cards: Forever

Small Business Owners: The 7-Year Rule and What It Covers

Small business owners in NH carry a heavier retention load than households. Federal and state rules layer on top of each other, and the standard window stretches longer than 3 years for most business documents.

IRS Publication 583

The IRS recommends business records be kept until the period of limitations for the tax return runs out. For most business returns, the window runs 3 years. For employment tax records, it is 4 years after the date the tax becomes due or is paid, whichever is later. For asset records, until the asset is disposed of plus 7 years.

Specific Business Document Retention

• Federal income tax returns: 7 years
• Employment tax records (941, 940, W-2, W-3): At least 4 years
• Sales receipts and invoices: 7 years
• Bank statements and reconciliations: 7 years
• Accounts receivable and payable ledgers: 7 years
• Cash receipt and disbursement journals: 7 years
• Inventory records: 7 years
• Asset records (purchase, depreciation, disposal): 7 years after disposal
• Vendor 1099s: 7 years
• Contracts and leases: 7 years after expiration

NH-Specific Business Records

• BPT and BET returns: 7 years
• NH Meals and Rooms Tax (if applicable): 3 years for the audit window
• NH Communications Services Tax (if applicable): 3 years
• Workers comp records under NH RSA 281-A: Active claim plus 7 years

Industry Overlays

Some industries carry longer retention. Healthcare practices follow HIPAA and NH RSA 332-I:1 (7 years from last patient contact). Financial advisors follow FINRA Rule 4511 (3 to 6 years depending on record type). Law firms follow NH Rules of Professional Conduct on file retention (often 6 to 10 years after matter close). Construction contractors keep contracts and warranties for the duration of any warranty plus statute-of-repose periods.

Build a Retention Calendar

Most small businesses run a year-end purge each January or February. They pull files dated more than 7 years past, box them, and ship to us for shredding. Drop-off at $0.99 per pound or $20 per large box, off-site pickup from $129.95 zone-based, or witnessed if board-level documentation requires it. See drop-off pricing.

What to Shred This Year: The Quick Action List

If you have not done a tax document purge in a few years, here is what to pull and shred this season.

Shred If From 2018 or Earlier

• Filed tax returns and supporting documents (W-2s, 1099s, receipts)
• Bank statements and canceled checks
• Credit card statements
• Pay stubs you already reconciled
• Charitable donation receipts
• Brokerage statements for sold securities

The 2018 return was due April 15, 2019. The 7-year window closed April 15, 2026. Records from 2018 and earlier are past audit defense windows for most taxpayers.

Shred If From 2024 or Earlier

• Monthly bank statements without a tax deduction tie
• Routine utility, phone, and internet bills
• EOBs not used for itemized medical deductions
• Old credit card receipts for non-tax purchases
• Expired warranties and product manuals for items no longer owned
• Old auto insurance declarations pages

Shred Anytime

• Junk mail with your name and address
• Pre-approved credit card offers (a top identity theft target per the FTC)
• Old health insurance ID cards from prior plans
• Expired credit and debit cards (cut into pieces before shredding bin)
• Boarding passes after travel
• Shipping labels and packing slips after returns

Never Shred Without Verifying

• Original birth certificates, marriage certificates, divorce decrees
• Current passports
• Vehicle titles for vehicles you still own
• Home deeds (unless you have certified copies)
• Wills, trusts, and powers of attorney
• Original Social Security cards
• Military discharge papers (DD-214)

How to Sort in One Afternoon

Pull every piece of paper from your filing cabinet, desk drawers, and the kitchen counter pile. Make three stacks. Keep stack (the never-shred items). Shred stack (everything past the retention window). Pending stack (the in-window items you still need). Bag the shred stack in grocery bags or banker boxes and drive to 1215 Main St, Unit 115, Tewksbury MA 01876. Nashua residents often pair the purge with a Saturday errand.

Why Shredding Beats Trashing: The Identity Theft Math

The Federal Trade Commission’s Consumer Sentinel data shows identity theft as one of the top consumer complaint categories every year, with 1.1 million reports in a recent reporting year. A meaningful share starts with paper. A thief who picks the right envelope from the right curbside trash bin gets enough to open a credit line in your name.

What a Thief Needs From Your Trash

• Pre-approved credit offer: Pre-screened by the issuer using your name, address, and a soft credit pull. Ready to activate.
• Old bank statement: Account number and routing data on every check image.
• Medical EOB: Member ID, group number, and enough PHI to launch medical identity fraud.
• Old tax return: Social Security number, dependents’ SSNs, employer info.
• Voided check: Routing and account numbers in clear print.

Dumpster Diving Is Legal in Most Places

Once trash leaves your property line and sits at the curb, courts have largely held you give up a privacy interest in it. The 1988 Supreme Court case California v. Greenwood set this precedent for Fourth Amendment purposes. A criminal trespass charge requires a thief to enter your property, but a thief who waits for the trash truck and rifles through a public bag commits no clear crime in most jurisdictions.

The Math

A shred service for a typical household purge runs $50 to $100. The average out-of-pocket cost of identity theft, per the FTC, ranges from a few hundred dollars to several thousand depending on the type. The time cost (resolving the theft, freezing credit, filing reports) averages 100+ hours. The shred service pays for itself many times over the first time it prevents a single incident.

Mass Shredding Beats Strip-Cut Shredding

Office shredders sold for home use often produce strips wider than 4mm. Determined identity thieves have reconstructed strip-cut output using publicly available software, sometimes in a few hours. Our industrial shredders at the BNBA A+-certified Tewksbury plant produce particles small enough to defeat reconstruction. Residential drop-off shredding gives households the same destruction standard hospitals and banks use.

Build an Annual Shred Rhythm

The households and small businesses who never get behind on paper run a simple rhythm. They sort once a month and shred once a quarter or once a year. Here is the framework.

Monthly: The 15-Minute Sort

Once a month, sit at the kitchen table with the prior month’s mail and bills. Sort each item into one of three buckets. File (tax-relevant, warranty-relevant, or otherwise active). Shred (junk with your name, expired statements, processed bills). Recycle (junk without your name, advertising mailers). Put the shred pile in a designated banker box.

Quarterly or Annual: The Tewksbury Run

When the box fills, drive to 1215 Main St, Unit 115, Tewksbury MA 01876. Drop-off pricing runs $0.99 per pound or $15 per small box. Plus the HIPAA Filing Fee of $14.95 and Plant Environment Fee of $19.95. A typical household visit runs $50 to $100 and takes under an hour round trip from Nashua or Salem.

Annual: The Year-End Purge

Each January, pull files dated 7 or more years past from your filing cabinet. Box them, label with the destruction year, and add to the shred pile. Most households fill 2 to 5 small boxes in a year-end purge. The cost is small. The peace of mind is large.

The Snowbird Adjustment

NH households who winter in Florida often run a pre-departure purge in October or November. We see a spike in drop-offs each fall as snowbirds clear paper before locking up the house. We see a second spike each spring as they reopen and clear winter mail accumulation.

The Estate Planning Adjustment

Households doing estate planning often run a major purge at the same time. The estate attorney recommends pulling decades of records, and the shred stack becomes a 20-box project. We schedule larger drop-offs or off-site pickups for this volume. Call 978-636-0301 to coordinate.

Book Your Tax Document Purge

Tax document retention is a calendar problem. The IRS gives you 3 to 7 years on most returns. Once the window closes, the records become a privacy risk with no audit value. Pull them, box them, and shred them at a BNBA A+-certified plant.

For Households

Drop-off at 1215 Main St, Unit 115, Tewksbury MA 01876. Drive time from southern NH towns is 20 to 40 minutes. Pricing runs $0.99 per pound or $15 per small box. Add the HIPAA Filing Fee ($14.95) and Plant Environment Fee ($19.95). Most household purges total $50 to $100.

For Small Business

Drop-off or off-site pickup both work. Drop-off saves the transport fee. Off-site saves staff time. Off-site adds transportation from $129.95 zone-based. Off-site shredding covers all of southern NH including Manchester, Concord, Bedford, and the seacoast.

For Compliance-Sensitive Records

Witnessed shredding at $1.99 per pound with a $100 minimum works when your internal policy requires an eyewitness. Healthcare practices with PHI sign our Business Associate Agreement before the first pickup.

How to Book

Call 978-636-0301 or use our online booking form. Tell us your box count and preferred date. We confirm pricing and schedule the visit. Drop-offs under 10 boxes do not need an appointment.

Trust Built Since 2007

BBB A+. AAA-Certified by the Boston Business Association. HIPAA, FACTA, and SOX compliant. 0 breaches since 2007. Certificate of Destruction issued for every job. The shred standard hospitals and banks use, available to NH households at the same plant.

2026 Pricing

Transparent rates with flat fees on every job. Use this table when budgeting your shredding job.

Frequently Asked Questions