Timekeeping and invoices,
reimagined.

AI-powered timesheets and effortless invoicing. Billing software created for the modern era.

Free 45-day trial · no card required

Monday, Aug 17Day0:00Week30:30
Calendar
9 AM101112 PM123
Site walk — Harbor House9:30 – 10:15
Bayview check-in11:00 – 12:00 · recurring
Townhouse CA meeting1:00 – 1:30 · with Priya Raghavan
Punch list — Joe2:30 – 3:15
Day ledger
Harbor HouseInteriors · Site walk
0:45
Cedar Ridge ClubhouseDesign Development · Bayview check-in
1:00
Skyline LoftsCA Retainer · Townhouse CA meeting
0:30
Meridian Rooftop BarConstruction Admin · Punch list
0:45
0 entries
The timesheet drafts itself from the day's calendar. You confirm it.
As loved by
Tania Chau
“Decent Billing has transformed our invoicing process! Instead of dealing with multiple spreadsheets and tools, we now have everything accessible and integrated in one place, saving us 10–15 hours a month.”
Tania Chau · Principal, ALA Studio
Fay Leff
“Decent has the best user interface I've seen. Not only does it make time entry a breeze, it encourages staff to log their hours in almost real time.”
Fay Leff · Founder, Sidekick Studio
Ayumi Sugiyama
“Calendar entries turn into logged hours automatically, which is a huge timesaver. The whole team enters their hours in minutes, and they actually like it.”
Ayumi Sugiyama · Director, Bench Architecture
01 Calendar to hours

Painless time entry is here.

Connect your Google or Microsoft calendar, and we'll automagically turn it into time entries mapped to your projects and phases.

02 Invoicing

Your most complex invoice, ready in thirty seconds.

Invoicing becomes a breeze. Progress billed phases, deposits, retainers, subconsultant invoices, expenses, purchases — handled in a few clicks.

Foster & Lamb HQ Refresh · August 2026
Step 2 of 3 · Invoice workbench
✓Draft up to date
Fixed fee · billed by progress$5,600.00
PhaseProgress this period%Amount
Test FitsPhase fee $35,000.0012%$4,200.00
Design DevelopmentPhase fee $28,000.005%$1,400.00
Hourly · Workplace Study23.00 h
Project Manager12.00$195$2,340.00
Designer11.00$150$1,650.00
Consultant services2 bills attached
Alder & Finch Structural · AF-2307$3,237.50+10%$3,561.25
Northwind MEP · NW-5518$2,465.00+10%$2,711.50
Invoice total
Fixed fee$5,600.00
Hourly$3,990.00
Consultants$6,272.75
Total due$15,862.75
Work logFull detail
Consultant bills2 PDFs attached
03 Projects

Project profitability at a glance.

Each project page shows the fee, what has been billed, what is still unbilled, and the hours and cost behind every phase. The margin is there before the last invoice goes out, not after the books close.

Foster & Lamb HQ RefreshFoster & Lamb Publishing · fixed fee by phase · 632 hours logged
Slipping
Fee$84,500
Billed$35,60042% of fee
Unbilled$48,900
Margin to date38%$31,964 on $52,536 cost
PhaseFeeHoursCostMargin
Programming100% billed$9,00042$3,27664%
Test Fits56% billed$35,000280$22,96034%
Design Development25% billed$28,000300$25,5009%
Construction Admin0% billed$12,50010$80094%
Cost is hours × each person's cost rate. Margin updates with every entry.
04 Timesheet health

See whose hours are missing before you bill.

One report shows every person, every day, and the gaps. Empty weekdays stand out before the invoice goes out, so you chase three missing days instead of auditing the whole month, and you know the month is safe to bill.

Timesheet health · July 6 – 26, 2026Is this month safe to bill from?
Hours logged1,631:45
Gap days6
People to nudge3
M6T7W8T9F10S11S12M13T14W15T16F17S18S19M20T21W22T23F24S25S26
Ingrid Sorensen
Omar Haddad
Anjali Mehta
Amara Okafor
Dmitri Volkov
Joe Demosthenes
Worked, light to full day Gap, empty weekday Weekend
05 Expenses & purchases

Every purchase, tracked from submission, to invoice, and reimbursement.

Interior design billing gets complicated fast: samples bought for the client, a courier to the site, a model shop bill, each with its own markup and sales tax where it applies. Your team submits the receipt, you approve from one queue, the employee is reimbursed, and the client sees it on the next invoice with the receipt attached and the markup already applied. No spreadsheet in between, and nothing billed twice.

Expenses & purchases · AugustFoster & Lamb HQ Refresh
3 receipts attached
Copperline Print ShopSample boards for the client
Purchasetax 4.5%
$213.84 · +20%$256.61
SubmittedApprovedReimbursedBilled
Lumen & Line Model ShopFoam-core site model
Reimbursable
$142.80 · +10%$157.08
SubmittedApprovedReimbursedBilled
Swiftlane CouriersSamples to the client's site
Reimbursable
$38.50 · +10%$42.35
SubmittedApprovedReimbursedBilled
Billed to the client this month$456.04
06 QuickBooks

QuickBooks, both ways.

Clients, invoices, and payments stay in sync without re-keying. Connect it once. Customers, invoices, and payments flow both directions, and your bookkeeper sees the same numbers you do.

QuickBooks Online
Connected · Decent Design Co. · last sync a minute ago
✓In sync
Decent Billing
Foster & Lamb PublishingClient✓ Synced to QuickBooks
DB-1030 · $21,021.28Invoice sent✓ Synced to QuickBooks
Payment · $21,021.28Card · Oct 3✓ Synced to QuickBooks
DB-1031 · $12,696.00DraftPending sync
07 Switching

Bring your history with you.

Billing and hours import from your old tool, so you don't lose a step. The importer reads what you export from Harvest, Monograph, or a spreadsheet, rebuilds clients, projects, and open balances, and shows you every row before anything is saved. Get started in minutes, not weeks.

Import billing historyStep 2 of 3 · reviewing
Harvestharvest-invoices-and-hours.csv2.1 MB
412invoices found
9,214hours matched to projects
38clients with balances
Read your file — it looks like a Harvest exportGrouped invoices by client and projectCarried open balances forwardFlagged 3 rows for you to check before anything is saved

Get started today.