Detect duplicate transaction
It has happened to me before that I inputted duplicate transactions and then my account balance was off. I think it'd be cool that upon creating (and saving) a new transaction, Lunch Money would automatically look through existing transactions and check whenever one already exists: on the same date with the same payee and the same amount if that is the case, a warning that it may be a duplicate transaction would be very useful
Create new transaction based on existing one
Use case I want to enter a new transaction that is just slightly different from another similar one. I could right click on the transaction / select it and go through the normal transaction creation process, but with the original transaction's data prefilled.
Allow for simple calculations in the amount field
Sometimes there is a need to add, subtract or calculate a percentage of a given amount. Would be nice to be able to do so directly in the amount field. This is particularly useful when adding transactions manually, but also for editing existing.
Show in-line currency conversion
Wherever there is a transaction not in your primary currency, show the currency conversion underneath (similar to Accounts view)
Cash flow forecasting
Create cash flow forecasting feature to know how much money you may have on a given day in the future based on recurring items and set budgets
Automatically create scheduled (recurring) transactions
Use case #1: setting aside X amount every 2 weeks Use case #2: prevent adding new transactions in the future from updating manually-managed account balance until day of
Calendar view of expenses
Calendar view would also include upcoming recurring items. Similar to Cash Flow Forecasting.
Display amount transferring instead of 0.00
Right now if you transfer money from one account to another, it groups the transactions and shows the amount as 0. Transfers should display the total amount transferred so that anyone can look at the transactions page and know what's going on, without clicking on a transaction to see the amount transferred.
If we're able to set a tag as "reimbursable" and any transactions we add that tag to would be removed from the budget/total - that would help when we spend a lot monthly on items we're reimbursed from businesses on. Categories is a temporary workaround, but I can only have 1 category for the item, instead of multiple (whereas having a category and multiple tags would help.)