This page lists bookkeeping and accounting firms that serve home-service and trades businesses such as HVAC, plumbing, electrical, roofing, landscaping, and general contracting in Nampa, ID. Each entry summarizes the firm based on its own website, and notes when a firm serves the area remotely rather than from a local office.
Firms listed: 2.
Castell Tax & Accounting – Nampa, ID #
Website: https://www.castelltax.com
Phone: (801) 550-2613
Castell Tax & Accounting, identified on its website as Castell Tax Experts LLC, is a family-owned tax and accounting firm based in Nampa, Idaho, at 16888 N Cornwallis Way, Nampa, ID 83687. According to its website, the firm provides bookkeeping, tax preparation, IRS representation, and CFO services to small businesses, and it serves Nampa, Boise, and the wider Treasure Valley, with a stated focus on southwest Idaho. The firm describes Nampa and the surrounding region as its community and presents its local presence as a form of accountability, while noting that much of the work is handled digitally with in-person meetings available when they matter.
The firm’s team is composed of Enrolled Agents, a federal credential that, according to the website, allows the firm to represent clients directly before the IRS. The site states that the firm has more than 50 years of experience and over 200 clients, and it identifies founder Diane Castell as having spent five decades in the field, beginning at age 18 working alongside her certified public accountant father.
Construction and the trades feature prominently among the industries the firm serves. The website lists trades and construction first among its industry specializations, describing job costing that shows which work makes money, subcontractor tracking for compliance, and tax strategy aimed at keeping more profit with the contractor. The firm also identifies a wide range of other sectors, including restaurants and food service, real estate, healthcare, professional services such as law firms and consultants, trucking and transportation, manufacturing, agriculture and cattle ranches, specialty retail, IT services, engineering and architectural firms, and startups. The website notes that each industry has its own tax rules and bookkeeping patterns.
Bookkeeping is a core service. According to the website, the firm provides clean, accurate books maintained throughout the year, including general ledger management, bank reconciliations, and monthly financial statements, offered at a flat monthly fee with unlimited questions. The firm also describes monthly and quarterly performance reporting such as profit and loss statements, balance sheets, and key performance indicators, framing these reports as a way for owners to make decisions based on facts. For businesses that need more oversight, the firm offers controller services that include monthly review of the books and the implementation of internal controls, as well as CFO and advisory services covering budgeting, forecasting, and cash flow planning.
Tax preparation is another central area. The website lists business tax preparation for all entity types, including federal, state, and multi-state returns, along with personal tax preparation for individuals with investments, rental properties, and self-employment income. It also describes estate tax preparation, sales tax compliance from registration through filing, payroll tax services with quarterly and annual filings, and inventory accounting for product-based businesses. The firm frames accurate year-round bookkeeping as the basis for filing returns correctly and identifying available deductions and credits.
Representation before tax authorities is a notable part of the firm’s work. Because its team members are Enrolled Agents, the website states that the firm handles IRS notices and audits directly, managing correspondence and resolution rather than referring clients elsewhere, and it also offers state tax representation for notices and audits from Idaho’s tax agency. The firm describes a set of common situations that bring clients in, including books that are months behind, tax season catching an owner unprepared, an IRS notice arriving in the mail, uncertainty about claimed deductions, outgrowing do-it-yourself bookkeeping, and starting a new business.
For newer businesses, the firm offers new business setup and strategy, including help choosing an entity structure such as an LLC, S corporation, or C corporation, establishing accounting systems and payroll, and handling first tax filings correctly. The website also lists QuickBooks setup, training, and conversion, along with financial planning for business owners.
The website includes client testimonials describing long-term relationships and confidence in the firm’s tax work for both individuals and corporations, with several reviews praising founder Diane Castell by name. Prospective clients are invited to book a call to describe their situation and receive a quote. The firm can be reached by phone or text at (801) 550-2613 and by email at hello@castelltax.com.
First Valley Accounting – Nampa, ID #
Website: https://www.firstvalleyaccounting.com
Phone: 888-998-8005
First Valley Accounting is a bookkeeping and accounting firm that serves small businesses in the Nampa, Idaho area. According to its website, the firm maintains a page dedicated to bookkeeping services for Nampa and describes its team as bookkeepers serving the Nampa area, made up of accounting experts and QuickBooks ProAdvisors. The firm states that it supports solo entrepreneurs, contractors, and small to mid-sized businesses throughout Nampa and the surrounding area, and it offers to meet with prospective clients to discuss their needs. The website does not list a specific street address, so the firm is presented here as serving Nampa and its surrounding businesses.
The firm organizes its work into tiered service packages. Its entry-level offering, described as Expert Bookkeeping, covers day-to-day accounting tasks, monthly reconciliation procedures, and monthly financial packages, and the website lists pricing starting at $500 per month. A broader Accounting Support package adds customized monthly financial packages along with additional services such as accounts receivable and invoicing, accounts payable and vendor management, sales tax tracking and remittance, and other ongoing tasks and deliverables, with pricing starting at $1,000 per month. The firm presents these tiers as a way for businesses to choose the level of support that fits their situation.
For businesses that need a higher level of financial guidance, First Valley Accounting offers CFO Services. According to the website, this package is intended for owners who need something beyond routine bookkeeping, covering areas such as financial budgeting and cash flow management and helping owners take control of their books in a more active way. The website lists pricing for CFO Services starting at $3,000 per month, positioning it as the firm’s most comprehensive engagement.
The firm emphasizes support for local Nampa businesses and compliance with Idaho requirements. In its frequently asked questions, the website confirms that the firm offers bookkeeping and accounting services for small businesses in Nampa, including monthly bookkeeping, cleanups, tax-ready financials, payroll support, and ongoing guidance tailored to local industries. It also states that the firm helps Nampa business owners stay compliant with Idaho tax rules, sales tax filings, annual reports, and other required local submissions, with a focus on keeping books accurate, meeting deadlines, and keeping the business in good standing year-round.
The website highlights bookkeeping as the foundation of the firm’s services, describing day-to-day accounting tasks, monthly reconciliation procedures, and the preparation of monthly financial packages across its offerings. The firm frames its role as helping owners maintain organized, accurate records so they can rely on their financials throughout the year. It identifies contractors among the clients it supports, alongside solo entrepreneurs and small to mid-sized businesses.
The firm presents its team by name on the website. Listed roles include Ryan Minner in client management, Ryan Baker in operations and delivery, and Chad Reed in risk and quality. The website also lists Hannah Junio and Suzette Gaerlan as accounting managers, Rico Doca, Macel Mendoza, and Joan Tamayo as bookkeepers, and Jamie Sanchez as an executive assistant. This structure suggests a team-based approach to client work rather than a single practitioner.
The website includes brief client comments. One client, described as a business owner, notes that the firm helped considerably and recommended expense reclassifications that boosted profits. Another comment comes from a co-founder of a tax and advisory firm who references passing along existing client work to free up bandwidth for higher-end projects, which indicates that the firm also works with other accounting and advisory practices in addition to direct business clients.
Prospective clients are invited to begin a conversation through the prompts on the firm’s website, which repeatedly encourage visitors to start a chat and explore the firm’s services and the industries it serves. First Valley Accounting can be reached by phone at 888-998-8005 and by email at hello@firstvalleyaccounting.com. The firm frames its overall message around letting its team of accounting experts and QuickBooks ProAdvisors add value to a business so that owners in the Nampa area can focus on running their companies.