How to Prepare 1099 and T4A Contractor Forms

Year end starts with a list of payments and a guess

In January, someone exports every payment to suppliers and tries to decide who needs a 1099 or a T4A. Goods, reimbursed costs and card payments are mixed in with fees for services.

Tax ids live in an email or a scanned form. When a supplier is over the threshold and there is no W-9, the deadline is close before anyone notices.

The final list is a spreadsheet with full tax ids in it, passed between people without any control.

Why this happens

• Payments for goods are counted as fees for services.
• Card payments, which the card processor reports, are counted again.
• Corporations and foreign suppliers are not separated from individuals.
• Tax ids are collected after the threshold is passed, not when the supplier is set up.

Biznsbook addresses this through Contractor profiles, year-end contractor forms, CSV and XLSX export when Accounting and Taxation are on. Sales, purchases, POS, Field Service, and Real Estate all ask the same tax engine, so the invoice, the return line, and the ledger read the same posted tax.

A second state, a reseller with a certificate, and a supplier that charged nothing are where a rate table drifts. Making Biznsbook the place that taxes the invoice, keeps the certificate, and builds the return keeps those on the same posted tax.

Step-by-step: Prepare 1099 and T4A Contractor Forms

Written for owners, bookkeepers, and finance staff who charge and file sales tax, GST, HST, QST, or PST with Biznsbook Taxation. Biznsbook calculates and reports from your own setup. It does not give tax advice and does not file returns with a tax authority for you.

1. Check the permission. Contractors and Contractor forms need the Manage tax configuration permission, because the export holds full tax ids. The forms and thresholds come from the US or Canada tax pack.
2. Add each contractor. For each supplier you pay for services, record the form they gave you: W-9, W-8BEN, W-8BEN-E, or their SIN or BN for Canada. Add the name and address the form goes to and their tax classification.
3. Store the tax id. The tax id is stored encrypted and only the last four digits are shown. Leaving the field blank or masked when you save keeps the saved id.
4. Choose the form box. Set the box their payments go in, for example 1099-NEC box 1, 1099-MISC box 1 for rents, T4A box 048 for fees for services, or T5018 for construction subcontract payments.
5. Run the year. On Contractor forms, pick the year. Biznsbook adds up posted cash and cheque payments, advances included, cash paid on purchase bills, and company-paid Expense payments. Card payments and bounced or cancelled vouchers are left out.
6. Review and exclude. A supplier at or over the year’s threshold shows Report. US corporations are marked exempt, except medical and attorney payments. W-8 holders are marked foreign. Open a supplier to see each payment and enter an excluded amount for goods or reimbursed costs.
7. Finalise and export. Finalising freezes the amounts and is refused while a reported supplier has no tax id. Export each form as Excel or CSV for your e-filing service or to fill the forms. Reopen the year if you need to correct it.

Review results after the first full filing period cycle. Adjust roles, mappings, or approvals where the same exception repeats.

Screen names in this guide match the Taxation tab bar in the product: Overview, Returns, Search, Settings, Packs, Rules, Local rates, Simulator, Registrations, Authorities, Components, Groups, Certificates, Nexus, 1099 / T4A, Provider, Checklist, Audit log, Approvals, and Guide. The tab bar only shows the tabs your permissions allow.

Common mistakes to avoid

• Mistake 1: Payments for goods are counted as fees for services. Repeating this each month usually shows up first in a return line that does not match the ledger, or tax charged in the wrong place.
• Mistake 2: Card payments, which the card processor reports, are counted again. Repeating this each month usually shows up first in a return line that does not match the ledger, or tax charged in the wrong place.
• Mistake 3: Corporations and foreign suppliers are not separated from individuals. Repeating this each month usually shows up first in a return line that does not match the ledger, or tax charged in the wrong place.
• Mistake 4: Tax ids are collected after the threshold is passed, not when the supplier is set up. Repeating this each month usually shows up first in a return line that does not match the ledger, or tax charged in the wrong place.

Note each recurring gap when you review the filing period. Each one should map to a step in this guide or an item on the compliance checklist.

Best practices that hold up as you scale

• Check the permission — Contractors and Contractor forms need the Manage tax configuration permission, because the export holds full tax ids.
• Add each contractor — For each supplier you pay for services, record the form they gave you: W-9, W-8BEN, W-8BEN-E, or their SIN or BN for Canada.
• Store the tax id — The tax id is stored encrypted and only the last four digits are shown.
• Choose the form box — Set the box their payments go in, for example 1099-NEC box 1, 1099-MISC box 1 for rents, T4A box 048 for fees for services, or T5018 for construction subcontract payments.
• Run the year — On Contractor forms, pick the year.

Teams that keep addresses complete, try a change in the Tax Simulator before switching it on, and file from the return lines rather than a side spreadsheet keep the invoice, the return, and the ledger in step.

How Biznsbook supports this workflow

Contractor profiles — part of Biznsbook Taxation, which sits on Accounting. Tax can come from tax groups, from jurisdiction rules installed by the Canada or US pack, or from your own Avalara AvaTax or TaxJar account. Whichever method you pick, posted tax lands on invoice tax lines that the dashboard, the return lines, and the settlement journal all read. Posted documents keep their tax when you change the setup later.

year-end contractor forms — part of Biznsbook Taxation, which sits on Accounting. Tax can come from tax groups, from jurisdiction rules installed by the Canada or US pack, or from your own Avalara AvaTax or TaxJar account. Whichever method you pick, posted tax lands on invoice tax lines that the dashboard, the return lines, and the settlement journal all read. Posted documents keep their tax when you change the setup later.

CSV and XLSX export — part of Biznsbook Taxation, which sits on Accounting. Tax can come from tax groups, from jurisdiction rules installed by the Canada or US pack, or from your own Avalara AvaTax or TaxJar account. Whichever method you pick, posted tax lands on invoice tax lines that the dashboard, the return lines, and the settlement journal all read. Posted documents keep their tax when you change the setup later.

The Canada and US tax packs are drafts until a tax adviser reviews them, and rates and taxability must be checked for your business. Rates are effective-dated, and reinstalling a pack keeps rules you edited. Biznsbook prepares returns and contractor figures and exports them; it does not e-file, and it is not tax advice.

Suggested implementation timeline

1. Week 1: Complete the state or province and postal code on the company, warehouses, and customers, and install the country pack for the places you sell into.
2. Week 2: Record your registrations, set item tax categories, and try real sales and purchases in the Tax Simulator.
3. Week 3: Switch Tax Settings to jurisdiction rules, post a few real invoices and purchase bills, and check the tax on each.
4. Week 4: Create the first filing period, put contractor profiles to work on real postings, review the return lines against posted tax, and export them for your adviser.
5. Ongoing: Each filing period, review the compliance checklist and the points under “Keep the export file safe” below.

Related guides

Start with charge sales tax by ship-to address, then charge GST, HST, QST and PST in Canada or file a state sales tax return.

Product page: Taxation. Hub: sales tax and GST guides. Decision: built-in sales tax rules vs Avalara or TaxJar.

What counts as a payment

The totals are for the calendar year. Posted cash and cheque payment vouchers count, as long as they are not bounced or cancelled, and advances are included. Cash paid on posted purchase bills counts. Company-paid Expense payments to an expense vendor linked to the supplier count too.

Payment allocations are not summed separately, so a payment is not counted twice because it was applied to several bills. Card payments are left out.

Statuses on the year list

Each supplier row shows a status: Report when at or over the threshold, Below when under it, exempt corporation, foreign for W-8 holders, no profile when there are no contractor details, or not reportable. Only Report rows are exported.

Canadian T4A and T5018 boxes and their thresholds come from the Canada pack. Thresholds and rules are drafts until reviewed by a tax adviser, so confirm the boxes and amounts that apply to your payments.

Metrics to track monthly

• Compliance checklist items by severity
• Exemption certificates expiring within 30 days or already expired
• States at or approaching their economic nexus threshold
• Draft filing periods close to their end date
• Recent sales to customers with no address, taxed at your own location

Start with three metrics; trend direction matters more than a single point-in-time snapshot.

Spreadsheet rate table vs Biznsbook Taxation

Compare a typical rate spreadsheet and manual return with the same work in Biznsbook Taxation.

Keep the export file safe

The export holds full tax ids, which is why the screens need Manage tax configuration. Treat the file like any other sensitive record: send it only to the e-filing service or adviser who needs it, and delete local copies you no longer need. Inside Biznsbook, the id stays encrypted and shows only the last four digits.

Write this into your filing routine, and revisit it when you register in a new province or state or change how tax is calculated.

Frequently asked questions

How this differs by industry