Readylander
Warlord
I raised my per turn income by over 70 gold when I finally discovered that I should be doing this.
Trade agreements last for 20 turns and at the end of the 20 turns they continue unless one of the parties initiates a change. After 20 turns the value of your export has almost certainly increased, I have yet to find one where I didn't get more money but I have only been doing this for the last couple hundred years of my current game.
Here is how I renegotiate those agreements:
At the foreign advisor screen I double click on on of the other civs which brings up the diplomacy screen, one of the options is "We would like to propose a deal...". Clicking on that brings up the trade agreement screen. At the bottom of that screen should be two options: New and Active (if you have any active agreements, if you don't go on to the next AI civ). Clicking on the Active link will list all of the currently active agreements with that civ. If at the beginning of a line there is a number within parentheses then you have an agreement that is still within its 20 year life and you can't renegotiate (the number within the parentheses is the number of remaining turns for the agreement). (To get out of the screen you have to click on New at the bottom) However if you have an agreement without the number within parentheses then it can be renegotiated. Make sure it is an agreement where you are exporting goods. Clicking on the line of the agreement you want to renegotiate will take you to the trade negotiation screen where you can negotiate as normal.
I have found that to maximize my income from these agreements I first find the maximum per turn amount that my trade advisor thinks the civ will pay and then I try to add a lump sum amount as well. The lump sum amount is never over 20 so I start at 10 and work from there depending on what the trade advisor says.
I check my agreements every 5 to 10 turns to ensure none are too outdated on pricing.
Trade agreements last for 20 turns and at the end of the 20 turns they continue unless one of the parties initiates a change. After 20 turns the value of your export has almost certainly increased, I have yet to find one where I didn't get more money but I have only been doing this for the last couple hundred years of my current game.
Here is how I renegotiate those agreements:
At the foreign advisor screen I double click on on of the other civs which brings up the diplomacy screen, one of the options is "We would like to propose a deal...". Clicking on that brings up the trade agreement screen. At the bottom of that screen should be two options: New and Active (if you have any active agreements, if you don't go on to the next AI civ). Clicking on the Active link will list all of the currently active agreements with that civ. If at the beginning of a line there is a number within parentheses then you have an agreement that is still within its 20 year life and you can't renegotiate (the number within the parentheses is the number of remaining turns for the agreement). (To get out of the screen you have to click on New at the bottom) However if you have an agreement without the number within parentheses then it can be renegotiated. Make sure it is an agreement where you are exporting goods. Clicking on the line of the agreement you want to renegotiate will take you to the trade negotiation screen where you can negotiate as normal.
I have found that to maximize my income from these agreements I first find the maximum per turn amount that my trade advisor thinks the civ will pay and then I try to add a lump sum amount as well. The lump sum amount is never over 20 so I start at 10 and work from there depending on what the trade advisor says.
I check my agreements every 5 to 10 turns to ensure none are too outdated on pricing.
