Tax preparation, bookkeeping, and accounting services for Nampa, Boise, and the Treasure Valley.

Call or Text: (801) 550-2613

Bookkeeping & Tax for Nampa Small Businesses

Tax and bookkeeping for Nampa businesses from a team that's actually based here. Enrolled Agents, flat monthly rates, 200+ clients served.

Your Nampa Tax and Bookkeeping Team

We’re not a Boise firm that drives out to the Treasure Valley when needed. Our office is in Nampa. This is where we work, where we live, and where we’ve built a practice serving over 200 clients. When you call your Nampa business tax preparation service, you’re calling people who are actually here.

Nampa has grown fast. Businesses that started in a garage or a spare room are now managing employees, equipment, and finances that got complicated somewhere along the way. We handle the bookkeeping and tax work so you can focus on running the business you built.

Monthly Bookkeeping

Transactions categorized, accounts reconciled, books closed every month. Clean financials that tell you where your business actually stands. Flat monthly pricing with unlimited questions.

Business Tax Preparation

Federal and Idaho state returns prepared by Enrolled Agents. We look for every deduction and credit available to you. Most business owners leave money on the table during tax season.

Payroll Services

Paychecks processed, taxes deposited, quarterly filings handled, W-2s issued. You approve hours and we take care of everything else including state and federal compliance.

Year-Round Tax Strategy

Tax planning isn’t a once-a-year conversation. We work with you throughout the year to make decisions that reduce your tax burden. By the time filing season arrives, we’ve already done the hard work.

Nampa Businesses We Work With

The Nampa economy has diversified as the city has grown. You still see the agricultural roots and manufacturing presence that have been here for decades. But now there are new restaurants opening regularly, contractors who can’t build houses fast enough, and professional services firms serving the growing population. All of them need books that work and taxes filed correctly.

We work with established businesses and newer ones still figuring things out. If you’ve reached the point where managing finances yourself is costing more time than it saves, that’s usually the right time to talk.

Construction and Trades

Nampa keeps building. Contractors and trade businesses need job costing, progress billing, and books that support bonding applications. We track profitability by project so you know which work is actually making money.

Restaurants and Food Service

The local restaurant scene has expanded with the population. Thin margins mean you need to know your food cost and labor cost in real time. We handle the daily reconciliation and tip reporting so you can focus on the kitchen.

Real Estate Professionals

Agents, brokers, investors, and property managers throughout the Treasure Valley. Commission income, rental properties, and 1031 exchanges all have tax implications. We track everything properly from day one.

Farms and Agriculture

Canyon County is still farm country. Dairies, crops, and cattle operations that need Schedule F prepared correctly and financials ready for operating lines. We understand the seasonal cash flow patterns that come with agriculture.

Common Questions

Where is your office located?

Right here in Nampa. We're not a Boise firm that lists Nampa as a service area. This is home base.

What does monthly bookkeeping cost?

Starting at $195 per month based on your expense volume. We quote exact pricing after learning about your business.

What's the difference between you and a regular bookkeeper?

Our team includes Enrolled Agents, which means we're federally licensed to represent you before the IRS. When tax issues come up, we handle them directly instead of sending you somewhere else.

My books are a mess. Can you fix that?

Yes. Most new clients come to us behind on their books. We clean things up first, then move to monthly service so it stays current.

Do you handle payroll and tax filings?

Yes. Payroll processing, tax deposits, quarterly filings, year-end W-2s. We also prepare business and personal tax returns.

The Treasure Valley's Tax and Accounting Team

The Next Step:
A Short Conversation

Tell us what you're dealing with. We'll listen, answer your questions, and give you a straightforward quote.

  • Enrolled Agent badge
  • Intuit ProAdvisor Gold Tier badge
  • QuickBooks Desktop certification badge
  • QuickBooks Online certification badge

© 2025 Castell Tax Experts LLC